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Saturday, February 10, 2024

The Rime of the Ancient Mariner

From Wikipedia, the free encyclopedia
The Rime of the Ancient Mariner
by Samuel Taylor Coleridge
The Mariner up on the mast in a storm. One of the wood-engraved illustrations by Gustave Doré of the poem.
Original titleThe Rime of the Ancyent Marinere
Written1797–98
First published inLyrical Ballads
CountryGreat Britain
LanguageEnglish
Subject(s)fate, doom, seafaring, superstition
FormBallad
Meteriambic tetrameter and iambic trimeter
Rhyme schemeabcb
PublisherJ. & A. Arch
Publication date1798
Media typeprint
Lines625

The Rime of the Ancient Mariner (originally The Rime of the Ancyent Marinere) is the longest major poem by the English poet Samuel Taylor Coleridge, written in 1797–98 and published in 1798 in the first edition of Lyrical Ballads. Some modern editions use a revised version printed in 1817 that featured a gloss. Along with other poems in Lyrical Ballads, it is often considered a signal shift to modern poetry and the beginning of British Romantic literature.

The Rime of the Ancient Mariner recounts the experiences of a sailor who has returned from a long sea voyage. The mariner stops a man who is on his way to a wedding ceremony and begins to narrate a story. The Wedding-Guest's reaction turns from bemusement to impatience to fear to fascination as the mariner's story progresses, as can be seen in the language style: Coleridge uses narrative techniques such as personification and repetition to create a sense of danger, the supernatural, or serenity, depending on the mood in different parts of the poem.

Synopsis

Frontispiece by William Strang for a 1903 edition of Coleridge's poem.

The poem begins with an old grey-bearded sailor, the Mariner, stopping a guest at a wedding ceremony to tell him a story of a sailing voyage he took long ago. The Wedding-Guest is at first reluctant to listen, as the ceremony is about to begin, but the mariner's glittering eye captivates him.

The mariner's tale begins with his ship departing on its journey. Despite initial good fortune, the ship is driven south by a storm and eventually reaches the icy waters of the Antarctic. An albatross appears and leads the ship out of the ice jam where it is stuck, but even as the albatross is fed and praised by the ship's crew, the mariner shoots the bird:

[...] With my cross-bow
I shot the Albatross.

— lines 81–82

The crew is angry with the mariner, believing the albatross brought the south wind that led them out of the Antarctic. However, the sailors change their minds when the weather becomes warmer and the mist disappears:

'Twas right, said they, such birds to slay,
That bring the fog and mist.

— lines 101–102

They soon find that they made a grave mistake in supporting this crime, as it arouses the wrath of spirits who then pursue the ship "from the land of mist and snow"; the south wind that had initially blown them north now sends the ship into uncharted waters near the equator, where it is becalmed:

Day after day, day after day,
We stuck, nor breath nor motion;
As idle as a painted ship
Upon a painted ocean.

Water, water, every where,
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.

The very deep did rot: Oh Christ!
That ever this should be!
Yea, slimy things did crawl with legs
Upon the slimy sea.

— lines 115–126
Engraving by Gustave Doré for an 1876 edition of the poem. The Albatross depicts 17 sailors on the deck of a wooden ship facing an albatross. Icicles hang from the rigging.
"The Albatross about my Neck was Hung," etching by William Strang, published 1896

The sailors change their minds again and blame the mariner for the torment of their thirst. In anger, the crew forces the mariner to wear the dead albatross about his neck, perhaps to illustrate the burden he must suffer from killing it, or perhaps as a sign of regret:

Ah! well a-day! what evil looks
Had I from old and young!
Instead of the cross, the Albatross
About my neck was hung.

— lines 139–142

After a "weary time", the ship encounters a ghostly hulk. On board are Death (a skeleton) and the "Night-mare Life-in-Death", a deathly pale woman, who are playing dice for the souls of the crew. With a roll of the dice, Death wins the lives of the crew members and Life-in-Death the life of the mariner, a prize she considers more valuable. Her name is a clue to the mariner's fate: he will endure a fate worse than death as punishment for his killing of the albatross. One by one, all of the crew members die, but the mariner lives on, seeing for seven days and nights the curse in the eyes of the crew's corpses, whose last expressions remain upon their faces:

Four times fifty living men,
(And I heard nor sigh nor groan)
With heavy thump, a lifeless lump,
They dropped down one by one.

The souls did from their bodies fly,—
They fled to bliss or woe!
And every soul, it passed me by,
Like the whizz of my cross-bow!

— lines 216–223

Eventually, this stage of the mariner's curse is lifted after he begins to appreciate the many sea creatures swimming in the water. Despite his cursing them as "slimy things" earlier in the poem, he suddenly sees their true beauty and blesses them ("A spring of love gush'd from my heart, And I bless'd them unaware"). As he manages to pray, the albatross falls from his neck and his guilt is partially expiated. It then starts to rain, and the bodies of the crew, possessed by good spirits, rise again and help steer the ship. In a trance, the mariner hears two spirits discussing his voyage and penance, and learns that the ship is being powered supernaturally:

The air is cut away before,
And closes from behind.

— lines 424–425

Finally the mariner wakes from his trance and comes in sight of his homeland, but is initially uncertain as to whether or not he is hallucinating:

Oh! dream of joy! is this indeed
The light-house top I see?
Is this the hill? is this the kirk?
Is this mine own countree?

We drifted o'er the harbour-bar,
And I with sobs did pray—
O let me be awake, my God!
Or let me sleep alway.

— lines 464–471

The rotten remains of the ship sink in a whirlpool, leaving only the mariner behind. A hermit on the mainland who has spotted the approaching ship comes to meet it in a boat, rowed by a pilot and his boy. When they pull the mariner from the water, they think he is dead, but when he opens his mouth, the pilot shrieks with fright. The hermit prays, and the mariner picks up the oars to row. The pilot's boy laughs, thinking the mariner is the devil, and cries, "The Devil knows how to row". Back on land, the mariner is compelled by "a woful agony" to tell the hermit his story.

As penance for shooting the albatross, the mariner, driven by the agony of his guilt, is now forced to wander the earth, telling his story over and over, and teaching a lesson to those he meets:

He prayeth best, who loveth best
All things both great and small;
For the dear God who loveth us,
He made and loveth all.

— lines 614–617

After finishing his story, the mariner leaves, and the wedding-guest returns home, waking the next morning "a sadder and a wiser man".

The poem received mixed reviews from critics, and Coleridge was once told by the publisher that most of the book's sales were to sailors who thought it was a naval songbook. Coleridge made several modifications to the poem over the years. In the second edition of Lyrical Ballads, published in 1800, he replaced many of the archaic words.

Inspiration for the poem

The poem may have been inspired by James Cook's second voyage of exploration (1772–1775) of the South Seas and the Pacific Ocean; Coleridge's tutor, William Wales, was the astronomer on Cook's flagship and had a strong relationship with Cook. On this second voyage Cook crossed three times into the Antarctic Circle to determine whether the fabled great southern continent Terra Australis existed. Critics have also suggested that the poem may have been inspired by the voyage of Thomas James into the Arctic.

According to Wordsworth, the poem was inspired while Coleridge, Wordsworth, and Wordsworth's sister Dorothy were on a walking tour through the Quantock Hills in Somerset. The discussion had turned to a book that Wordsworth was reading, that described a privateering voyage in 1719 during which a melancholy sailor, Simon Hatley, shot a black albatross.

Commemorative statue at Watchet, Somerset: the albatross hangs on a rope looped around the ancient mariner's neck.

"Ah! well a-day! what evil looks
Had I from old and young!
Instead of the cross, the Albatross
About my neck was hung."

As they discussed Shelvocke's book, Wordsworth proffered the following developmental critique to Coleridge, which importantly contains a reference to tutelary spirits: "Suppose you represent him as having killed one of these birds on entering the south sea, and the tutelary spirits of these regions take upon them to avenge the crime." By the time the trio finished their walk, the poem had taken shape.

Bernard Martin argues in The Ancient Mariner and the Authentic Narrative that Coleridge was also influenced by the life of Anglican clergyman John Newton, who had a near-death experience aboard a slave ship.

The poem may also have been inspired by the legends of the Wandering Jew, who was forced to wander the earth until Judgement Day for a terrible crime, found in Charles Maturin's Melmoth the Wanderer, M. G. Lewis' The Monk (a 1796 novel Coleridge reviewed), and the legend of the Flying Dutchman.

It is argued that the harbour at Watchet in Somerset was the primary inspiration for the poem, although some time before, John Cruikshank, a local acquaintance of Coleridge's, had related a dream about a skeleton ship crewed by spectral sailors. In September 2003, a commemorative statue, by Alan B. Herriot of Penicuik, Scotland, was unveiled at Watchet harbour.

Coleridge's comments

In Biographia Literaria, Coleridge wrote:

The thought suggested itself (to which of us I do not recollect) that a series of poems might be composed of two sorts. In the one, incidents and agents were to be, in part at least, supernatural, and the excellence aimed at was to consist in the interesting of the affections by the dramatic truth of such emotions, as would naturally accompany such situations, supposing them real. And real in this sense they have been to every human being who, from whatever source of delusion, has at any time believed himself under supernatural agency. For the second class, subjects were to be chosen from ordinary life ... In this idea originated the plan of the Lyrical Ballads; in which it was agreed, that my endeavours should be directed to persons and characters supernatural, or at least Romantic; yet so as to transfer from our inward nature a human interest and a semblance of truth sufficient to procure for these shadows of imagination that willing suspension of disbelief for the moment, which constitutes poetic faith. ... With this view I wrote the Ancient Mariner.

In Table Talk, Coleridge wrote:

Mrs. Barbauld once told me that she admired The Ancient Mariner very much, but that there were two faults in it – it was improbable, and had no moral. As for the probability, I owned that that might admit some question; but as to the want of a moral, I told her that in my own judgement the poem had too much; and that the only, or chief fault, if I might say so, was the obtrusion of the moral sentiment so openly on the reader as a principle or cause of action in a work of such pure imagination. It ought to have had no more moral than the Arabian Nights' tale of the merchant's sitting down to eat dates by the side of a well, and throwing the shells aside, and lo! a genie starts up, and says he must kill the aforesaid merchant, because one of the date shells had, it seems, put out the eye of the genie's son.

Wordsworth's comments

Wordsworth wrote to Joseph Cottle in 1799:

From what I can gather it seems that the Ancient Mariner has upon the whole been an injury to the volume, I mean that the old words and the strangeness of it have deterred readers from going on. If the volume should come to a second Edition I would put in its place some little things which would be more likely to suit the common taste.

However, when Lyrical Ballads was reprinted, Wordsworth included it despite Coleridge's objections, writing:

The Poem of my Friend has indeed great defects; first, that the principal person has no distinct character, either in his profession of Mariner, or as a human being who having been long under the control of supernatural impressions might be supposed himself to partake of something supernatural; secondly, that he does not act, but is continually acted upon; thirdly, that the events having no necessary connection do not produce each other; and lastly, that the imagery is somewhat too laboriously accumulated. Yet the Poem contains many delicate touches of passion, and indeed the passion is every where true to nature, a great number of the stanzas present beautiful images, and are expressed with unusual felicity of language; and the versification, though the metre is itself unfit for long poems, is harmonious and artfully varied, exhibiting the utmost powers of that metre, and every variety of which it is capable. It therefore appeared to me that these several merits (the first of which, namely that of the passion, is of the highest kind) gave to the Poem a value which is not often possessed by better Poems.

Early criticisms

Illustration by Gustave Doré, 1878

Upon its release, the poem was criticized for being obscure and difficult to read. The use of archaic spelling of words was seen as not in keeping with Wordsworth's claims of using common language. Criticism was renewed again in 1815–1816, when Coleridge added marginal notes to the poem that were also written in an archaic style. These notes or glosses, placed next to the text of the poem, ostensibly interpret the verses much like marginal notes found in the Bible. There were many opinions on why Coleridge inserted the gloss.

Charles Lamb, who had deeply admired the original for its attention to "Human Feeling", claimed that the gloss distanced the audience from the narrative, weakening the poem's effects. The entire poem was first published in the collection of Lyrical Ballads. Another version of the poem was published in the 1817 collection entitled Sibylline Leaves (see 1817 in poetry).

Interpretations

On a surface level the poem explores a violation of nature and the resulting psychological effects on the mariner and on all those who hear him. According to Jerome McGann the poem is like a salvation story. The poem's structure is multi-layered text based on Coleridge's interest in higher criticism. "Like the Iliad or Paradise Lost or any great historical product, the Rime is a work of trans-historical rather than so-called universal significance. This verbal distinction is important because it calls attention to a real one. Like The Divine Comedy or any other poem, the Rime is not valued or used always or everywhere or by everyone in the same way or for the same reasons."

Whalley (1947) suggests that the Ancient Mariner is an autobiographical portrait of Coleridge himself, comparing the mariner's loneliness with Coleridge's own feelings of loneliness expressed in his letters and journals.

In Sexual Personae: Art and Decadence from Nefertiti to Emily Dickinson (1990), Camille Paglia writes that the Bridegroom, Wedding-Guest and Mariner all represent aspects of Coleridge: "The Bridegroom is a masculine persona" that is "integrated with society", and that the Wedding-Guest is an adolescent seeking "sexual fulfilment and collective joy", that must merge with the Bridegroom but is unable to because of the appearance of a spectre-self, a "male heroine" who "luxuriates in passive suffering".

Versions of the poem

Coleridge often made changes to his poems and The Rime of the Ancient Mariner was no exception – he produced at least eighteen different versions over the years. He regarded revision as an essential part of creating poetry. The first published version of the poem was in Lyrical Ballads in 1798. The second edition of this anthology in 1800 included a revised text, requested by Coleridge, in which some of the language and many of the archaic spellings were modernised. He also reduced the title to The Ancient Mariner but for later versions the longer title was restored. The 1802 and 1805 editions of Lyrical Ballads had minor textual changes. In 1817 Coleridge's Sibylline Leaves anthology included a new version with an extensive marginal gloss, written by the poet. The last version he produced was in 1834.

Traditionally literary critics regarded each revision of a text by an author as producing a more authoritative version and Coleridge published somewhat revised versions of the poem in his Poetical Works anthology editions of 1828, 1829, and lastly in 1834—the year of his death. More recently scholars look to the earliest version, even in manuscript, as the most authoritative but for this poem no manuscript is extant. Hence the editors of the edition of Collected Poems published in 1972 used the 1798 version but made their own modernisation of the spelling and they added some passages taken from later editions.

The 1817 edition, the one most used today and the first to be published under Coleridge's own name rather than anonymously, added a new Latin epigraph but the major change was the addition of the gloss that has a considerable effect on the way the poem reads. Coleridge's grandson E.H. Coleridge produced a detailed study of the published versions of the poem. Over all, Coleridge's revisions resulted in the poem losing thirty-nine lines and an introductory prose "Argument", and gaining fifty-eight glosses and a Latin epigraph.

In general the anthologies included printed lists of errata and, in the case of the particularly lengthy list in Sibylline Leaves, the list was included at the beginning of the volume. Such changes were often editorial rather than merely correcting errors. Coleridge also made handwritten changes in printed volumes of his work, particularly when he presented them as gifts to friends.

In popular culture

In addition to being referred to in several other notable works, due to the popularity of the poem the phrase "albatross around one's neck" has become an English-language idiom referring to "a heavy burden of guilt that becomes an obstacle to success".

The phrase "Water, water, every where, / Nor any drop to drink" has appeared widely in popular culture, but usually given in a more natural modern phrasing as "Water, water, everywhere / But not a drop to drink"; some such appearances have, in turn, played on the frequency with which these lines are misquoted.

Motor theory of speech perception

From Wikipedia, the free encyclopedia
 
The motor theory of speech perception is the hypothesis that people perceive spoken words by identifying the vocal tract gestures with which they are pronounced rather than by identifying the sound patterns that speech generates. It originally claimed that speech perception is done through a specialized module that is innate and human-specific. Though the idea of a module has been qualified in more recent versions of the theory, the idea remains that the role of the speech motor system is not only to produce speech articulations but also to detect them.

The hypothesis has gained more interest outside the field of speech perception than inside. This has increased particularly since the discovery of mirror neurons that link the production and perception of motor movements, including those made by the vocal tract. The theory was initially proposed in the Haskins Laboratories in the 1950s by Alvin Liberman and Franklin S. Cooper, and developed further by Donald Shankweiler, Michael Studdert-Kennedy, Ignatius Mattingly, Carol Fowler and Douglas Whalen.

Origins and development

When we hear spoken words we sense that they are made of auditory sounds. The motor theory of speech perception argues that behind the sounds we hear are the intended movements of the vocal tract that pronounces them.

The hypothesis has its origins in research using pattern playback to create reading machines for the blind that would substitute sounds for orthographic letters. This led to a close examination of how spoken sounds correspond to the acoustic spectrogram of them as a sequence of auditory sounds. This found that successive consonants and vowels overlap in time with one another (a phenomenon known as coarticulation). This suggested that speech is not heard like an acoustic "alphabet" or "cipher," but as a "code" of overlapping speech gestures.

Associationist approach

Initially, the theory was associationist: infants mimic the speech they hear and that this leads to behavioristic associations between articulation and its sensory consequences. Later, this overt mimicry would be short-circuited and become speech perception. This aspect of the theory was dropped, however, with the discovery that prelinguistic infants could already detect most of the phonetic contrasts used to separate different speech sounds.

Cognitivist approach

The behavioristic approach was replaced by a cognitivist one in which there was a speech module. The module detected speech in terms of hidden distal objects rather than at the proximal or immediate level of their input. The evidence for this was the research finding that speech processing was special such as duplex perception.

Changing distal objects

Initially, speech perception was assumed to link to speech objects that were both

  • the invariant movements of speech articulators
  • the invariant motor commands sent to muscles to move the vocal tract articulators

This was later revised to include the phonetic gestures rather than motor commands, and then the gestures intended by the speaker at a prevocal, linguistic level, rather than actual movements.

Modern revision

The "speech is special" claim has been dropped, as it was found that speech perception could occur for nonspeech sounds (for example, slamming doors for duplex perception).

Mirror neurons

The discovery of mirror neurons has led to renewed interest in the motor theory of speech perception, and the theory still has its advocates, although there are also critics.

Support

Nonauditory gesture information

If speech is identified in terms of how it is physically made, then nonauditory information should be incorporated into speech percepts even if it is still subjectively heard as "sounds". This is, in fact, the case.

  • The McGurk effect shows that seeing the production of a spoken syllable that differs from an auditory cue synchronized with it affects the perception of the auditory one. In other words, if someone hears "ba" but sees a video of someone pronouncing "ga", what they hear is different—some people believe they hear "da".
  • People find it easier to hear speech in noise if they can see the speaker.
  • People can hear syllables better when their production can be felt haptically.

Categorical perception

Using a speech synthesizer, speech sounds can be varied in place of articulation along a continuum from /bɑ/ to /dɑ/ to /ɡɑ/, or in voice onset time on a continuum from /dɑ/ to /tɑ/ (for example). When listeners are asked to discriminate between two different sounds, they perceive sounds as belonging to discrete categories, even though the sounds vary continuously. In other words, 10 sounds (with the sound on one extreme being /dɑ/ and the sound on the other extreme being /tɑ/, and the ones in the middle varying on a scale) may all be acoustically different from one another, but the listener will hear all of them as either /dɑ/ or /tɑ/. Likewise, the English consonant /d/ may vary in its acoustic details across different phonetic contexts (the /d/ in /du/ does not technically sound the same as the one in /di/, for example), but all /d/'s as perceived by a listener fall within one category (voiced alveolar plosive) and that is because "linguistic representations are abstract, canonical, phonetic segments or the gestures that underlie these segments." This suggests that humans identify speech using categorical perception, and thus that a specialized module, such as that proposed by the motor theory of speech perception, may be on the right track.

Speech imitation

If people can hear the gestures in speech, then the imitation of speech should be very fast, as in when words are repeated that are heard in headphones as in speech shadowing. People can repeat heard syllables more quickly than they would be able to produce them normally.

Speech production

  • Hearing speech activates vocal tract muscles, and the motor cortex and premotor cortex. The integration of auditory and visual input in speech perception also involves such areas.
  • Disrupting the premotor cortex disrupts the perception of speech units such as plosives.
  • The activation of the motor areas occurs in terms of the phonemic features which link with the vocal track articulators that create speech gestures.
  • The perception of a speech sound is aided by pre-emptively stimulating the motor representation of the articulators responsible for its pronunciation .
  • Auditory and motor cortical coupling is restricted to a specific range of neuronal firing frequency.

Perception-action meshing

Evidence exists that perception and production are generally coupled in the motor system. This is supported by the existence of mirror neurons that are activated both by seeing (or hearing) an action and when that action is carried out. Another source of evidence is that for common coding theory between the representations used for perception and action.

Criticisms

The motor theory of speech perception is not widely held in the field of speech perception, though it is more popular in other fields, such as theoretical linguistics. As three of its advocates have noted, "it has few proponents within the field of speech perception, and many authors cite it primarily to offer critical commentary". Several critiques of it exist.

Multiple sources

Speech perception is affected by nonproduction sources of information, such as context. Individual words are hard to understand in isolation but easy when heard in sentence context. It therefore seems that speech perception uses multiple sources that are integrated together in an optimal way.

Production

The motor theory of speech perception would predict that speech motor abilities in infants predict their speech perception abilities, but in actuality it is the other way around. It would also predict that defects in speech production would impair speech perception, but they do not. However, this only affects the first and already superseded behaviorist version of the theory, where infants were supposed to learn all production-perception patterns by imitation early in childhood. This is no longer the mainstream view of motor-speech theorists.

Speech module

Several sources of evidence for a specialized speech module have failed to be supported.

  • Duplex perception can be observed with door slams.
  • The McGurk effect can also be achieved with nonlinguistic stimuli, such as showing someone a video of a basketball bouncing but playing the sound of a ping-pong ball bouncing.
  • As for categorical perception, listeners can be sensitive to acoustic differences within single phonetic categories.

As a result, this part of the theory has been dropped by some researchers.

Sublexical tasks

The evidence provided for the motor theory of speech perception is limited to tasks such as syllable discrimination that use speech units not full spoken words or spoken sentences. As a result, "speech perception is sometimes interpreted as referring to the perception of speech at the sublexical level. However, the ultimate goal of these studies is presumably to understand the neural processes supporting the ability to process speech sounds under ecologically valid conditions, that is, situations in which successful speech sound processing ultimately leads to contact with the mental lexicon and auditory comprehension." This however creates the problem of " a tenuous connection to their implicit target of investigation, speech recognition".

Birds

It has been suggested that birds also hear each other's bird song in terms of vocal gestures.

Historical linguistics

From Wikipedia, the free encyclopedia
 
Historical linguistics, also termed diachronic linguistics, is the scientific study of language change over time. Principal concerns of historical linguistics include:
  1. to describe and account for observed changes in particular languages
  2. to reconstruct the pre-history of languages and to determine their relatedness, grouping them into language families (comparative linguistics)
  3. to develop general theories about how and why language changes
  4. to describe the history of speech communities
  5. to study the history of words, i.e. etymology
  6. to explore the impact of cultural and social factors on language evolution.

Historical linguistics is founded on the Uniformitarian Principle, which is defined by linguist Donald Ringe as:

Unless we can demonstrate significant changes in the conditions of language acquisition and use between some time in the unobservable past and the present, we must assume that the same types and distributions of structures, variation, changes, etc. existed at that time in the past as in the present.

History and development

Western modern historical linguistics dates from the late-18th century. It grew out of the earlier discipline of philology, the study of ancient texts and documents dating back to antiquity.

At first, historical linguistics served as the cornerstone of comparative linguistics, primarily as a tool for linguistic reconstruction. Scholars were concerned chiefly with establishing language families and reconstructing unrecorded proto-languages, using the comparative method and internal reconstruction. The focus was initially on the well-known Indo-European languages, many of which had long written histories; scholars also studied the Uralic languages, another Eurasian language-family for which less early written material exists. Since then, there has been significant comparative linguistic work expanding outside of European languages as well, such as on the Austronesian languages and on various families of Native American languages, among many others. Comparative linguistics became only a part of a more broadly-conceived discipline of historical linguistics. For the Indo-European languages, comparative study is now a highly specialized field.

Some scholars have undertaken studies attempting to establish super-families, linking, for example, Indo-European, Uralic, and other families into Nostratic. These attempts have not met with wide acceptance. The information necessary to establish relatedness becomes less available as the time increases. The time-depth of linguistic methods is limited due to chance word resemblances and variations between language groups, but a limit of around 10,000 years is often assumed. The dating of the various proto-languages is also difficult; several methods are available for dating, but only approximate results can be obtained.

Diachronic and synchronic analysis

In linguistics, a synchronic analysis is one that views linguistic phenomena only at a given time, usually the present, but a synchronic analysis of a historical language form is also possible. It may be distinguished from diachronic, which regards a phenomenon in terms of developments through time. Diachronic analysis is the main concern of historical linguistics. However, most other branches of linguistics are concerned with some form of synchronic analysis. The study of language change offers a valuable insight into the state of linguistic representation, and because all synchronic forms are the result of historically evolving diachronic changes, the ability to explain linguistic constructions necessitates a focus on diachronic processes.

Swiss linguist Ferdinand de Saussure
Swiss linguist Ferdinand de Saussure

Initially, all of modern linguistics was historical in orientation. Even the study of modern dialects involved looking at their origins. Ferdinand de Saussure's distinction between synchronic and diachronic linguistics is fundamental to the present day organization of the discipline. Primacy is accorded to synchronic linguistics, and diachronic linguistics is defined as the study of successive synchronic stages. Saussure's clear demarcation, however, has had both defenders and critics.

In practice, a purely-synchronic linguistics is not possible for any period before the invention of the gramophone, as written records always lag behind speech in reflecting linguistic developments. Written records are difficult to date accurately before the development of the modern title page. Often, dating must rely on contextual historical evidence such as inscriptions, or modern technology, such as carbon dating, can be used to ascertain dates of varying accuracy. Also, the work of sociolinguists on linguistic variation has shown synchronic states are not uniform: the speech habits of older and younger speakers differ in ways that point to language change. Synchronic variation is linguistic change in progress.

Synchronic and diachronic approaches can reach quite different conclusions. For example, a Germanic strong verb like English sing – sang – sung is irregular when it is viewed synchronically: the native speaker's brain processes them as learned forms, but the derived forms of regular verbs are processed quite differently, by the application of productive rules (for example, adding -ed to the basic form of a verb as in walk – walked). That is an insight of psycholinguistics, which is relevant also for language didactics, both of which are synchronic disciplines. However, a diachronic analysis shows that the strong verb is the remnant of a fully regular system of internal vowel changes, in this case the Indo-European ablaut; historical linguistics seldom uses the category "irregular verb".

The principal tools of research in diachronic linguistics are the comparative method and the method of internal reconstruction. Less-standard techniques, such as mass lexical comparison, are used by some linguists to overcome the limitations of the comparative method, but most linguists regard them as unreliable.

The findings of historical linguistics are often used as a basis for hypotheses about the groupings and movements of peoples, particularly in the prehistoric period. In practice, however, it is often unclear how to integrate the linguistic evidence with the archaeological or genetic evidence. For example, there are numerous theories concerning the homeland and early movements of the Proto-Indo-Europeans, each with its own interpretation of the archaeological record.

Sub-fields of study

Classification of Indo-European languages. Red: Extinct languages. White: categories or unattested proto-languages. Left half: centum languages; right half: satem languages

Comparative linguistics

Comparative linguistics (originally comparative philology) is a branch of historical linguistics that is concerned with comparing languages in order to establish their historical relatedness. Languages may be related by convergence through borrowing or by genetic descent, thus languages can change and are also able to cross-relate.

Genetic relatedness implies a common origin or proto-language. Comparative linguistics has the goal of constructing language families, reconstructing proto-languages, and specifying the changes that have resulted in the documented languages. To maintain a clear distinction between attested language and reconstructed forms, comparative linguists will prefix an asterisk to any form that is not found in surviving texts.

Etymology

Etymology is the study of the history of words: when they entered a language, from what source, and how their form and meaning have changed over time. A word may enter a language as a loanword (as a word from one language adopted by speakers of another language), through derivational morphology by combining pre-existing elements in the language, by a hybrid of these two processes called phono-semantic matching, or in several other minor ways.

In languages with a long and detailed history, etymology makes use of philology, the study of how words change from culture to culture over time. Etymologists also apply the methods of comparative linguistics to reconstruct information about languages that are too old for any direct information (such as writing) to be known. By analyzing related languages with a technique known as the comparative method, linguists can make inferences about their shared parent language and its vocabulary. In that way, word roots that can be traced all the way back to the origin of, for instance, the Indo-European language family have been found. Although originating in the philological tradition, much current etymological research is done in language families for which little or no early documentation is available, such as Uralic and Austronesian.

Dialectology

Dialectology is the scientific study of linguistic dialect, the varieties of a language that are characteristic of particular groups, based primarily on geographic distribution and their associated features. This is in contrast to variations based on social factors, which are studied in sociolinguistics, or variations based on time, which are studied in historical linguistics. Dialectology treats such topics as divergence of two local dialects from a common ancestor and synchronic variation.

Dialectologists are concerned with grammatical features that correspond to regional areas. Thus, they are usually dealing with populations living in specific locales for generations without moving, but also with immigrant groups bringing their languages to new settlements. Immigrant groups often bring their linguistic practices to new settlements, leading to distinct linguistic varieties within those communities. Dialectologists analyze these immigrant dialects to understand how languages develop and diversify in response to migration and cultural interactions.

Phonology

Phonology is a sub-field of linguistics which studies the sound system of a specific language or set of languages. Whereas phonetics is about the physical production and perception of the sounds of speech, phonology describes the way sounds function within a given language or across languages.

An important part of phonology is studying which sounds are distinctive units within a language. For example, the "p" in "pin" is aspirated, but the "p" in "spin" is not. In English these two sounds are used in complementary distribution and are not used to differentiate words so they are considered allophones of the same phoneme. In some other languages like Thai and Quechua, the same difference of aspiration or non-aspiration differentiates words and so the two sounds (or phones) are therefore considered two distinct phonemes.

In addition to the minimal meaningful sounds (the phonemes), phonology studies how sounds alternate, such as the /p/ in English, and topics such as syllable structure, stress, accent, and intonation.

The principles of phonological theory have also been applied to the analysis of sign languages, but the phonological units do not consist of sounds. The principles of phonological analysis can be applied independently of modality because they are designed to serve as general analytical tools, not language-specific ones.

Morphology

Morphology is the study of the formal means of expression in a language; in the context of historical linguistics, how the formal means of expression change over time; for instance, languages with complex inflectional systems tend to be subject to a simplification process. This field studies the internal structure of words as a formal means of expression.

Words as units in the lexicon are the subject matter of lexicology. While words are generally accepted as being (with clitics) the smallest units of syntax, it is clear that, in most (if not all) languages, words can be related to other words by rules. The rules understood by the speaker reflect specific patterns (or regularities) in the way words are formed from smaller units and how those smaller units interact in speech. In this way, morphology is the branch of linguistics that studies patterns of word-formation within and across languages, and attempts to formulate rules that model the knowledge of the speakers of those languages, in the context of historical linguistics, how the means of expression change over time. See grammaticalisation.

Syntax

Syntax is the study of the principles and rules for constructing sentences in natural languages. The term syntax is used to refer directly to the rules and principles that govern the sentence structure of any individual language, as in "the syntax of Modern Irish". Modern researchers in syntax attempt to describe languages in terms of such rules. Many professionals in this discipline attempt to find general rules that apply to all natural languages in the context of historical linguistics, how characteristics of sentence structure in related languages changed over time. See grammaticalisation.

Rates of change and varieties of adaptation

Studies in historical linguistics often use the terms "conservative" or "innovative" to characterize the extent of change occurring in a particular language or dialect as compared with related varieties. In particular, a conservative variety changes relatively less than an innovative variety. The variations in plasticity are often related to the socio-economic situation of the language speakers. An example of an innovative dialect would be American English because of the vast number of speakers and the open interaction its speakers have with other language groups; the changes can be seen in the terms developed for business and marketing, among other fields such as technology.

The converse of an innovative language is a conservative language, which is generally defined by its static nature and imperviousness to outside influences. Most but not all conservative languages are spoken in secluded areas that lack any other primary language speaking population.

Neither descriptive terms carries any value judgment in linguistic studies or determines any form of worthiness a language has, compared to any other language.

A particularly-conservative variety that preserves features that have long since vanished elsewhere is sometimes said to be "archaic". There are few examples of archaic language in modern society, but some have survived in set phrases or in nursery rhymes.

Evolutionary context

In terms of evolutionary theory, historical linguistics (as opposed to research into the origin of language) studies Lamarckian acquired characteristics of languages. This perspective explores how languages adapt and change over time in response to cultural, societal, and environmental factors. Language evolution within the framework of historical linguistics is akin to Lamarckism in the sense that linguistic traits acquired during an individual's lifetime can potentially influence subsequent generations of speakers.

FOXP2

From Wikipedia, the free encyclopedia
FOXP2

Forkhead box protein P2 (FOXP2) is a protein that, in humans, is encoded by the FOXP2 gene. FOXP2 is a member of the forkhead box family of transcription factors, proteins that regulate gene expression by binding to DNA. It is expressed in the brain, heart, lungs and digestive system.

FOXP2 is found in many vertebrates, where it plays an important role in mimicry in birds (such as birdsong) and echolocation in bats. FOXP2 is also required for the proper development of speech and language in humans. In humans, mutations in FOXP2 cause the severe speech and language disorder developmental verbal dyspraxia. Studies of the gene in mice and songbirds indicate that it is necessary for vocal imitation and the related motor learning. Outside the brain, FOXP2 has also been implicated in development of other tissues such as the lung and digestive system.

Initially identified in 1998 as the genetic cause of a speech disorder in a British family designated the KE family, FOXP2 was the first gene discovered to be associated with speech and language and was subsequently dubbed "the language gene". However, other genes are necessary for human language development, and a 2018 analysis confirmed that there was no evidence of recent positive evolutionary selection of FOXP2 in humans.

Structure and function

Foxp2 is expressed in the developing cerebellum and the hindbrain of the embryonic day 13.5 mouse. Allen Brain Atlases

As a FOX protein, FOXP2 contains a forkhead-box domain. In addition, it contains a polyglutamine tract, a zinc finger and a leucine zipper. The protein attaches to the DNA of other proteins and controls their activity through the forkhead-box domain. Only a few targeted genes have been identified, however researchers believe that there could be up to hundreds of other genes targeted by the FOXP2 gene. The forkhead box P2 protein is active in the brain and other tissues before and after birth, many studies show that it is paramount for the growth of nerve cells and transmission between them. The FOXP2 gene is also involved in synaptic plasticity, making it imperative for learning and memory.

FOXP2 is required for proper brain and lung development. Knockout mice with only one functional copy of the FOXP2 gene have significantly reduced vocalizations as pups. Knockout mice with no functional copies of FOXP2 are runted, display abnormalities in brain regions such as the Purkinje layer, and die an average of 21 days after birth from inadequate lung development.

FOXP2 is expressed in many areas of the brain, including the basal ganglia and inferior frontal cortex, where it is essential for brain maturation and speech and language development. In mice, the gene was found to be twice as highly expressed in male pups than female pups, which correlated with an almost double increase in the number of vocalisations the male pups made when separated from mothers. Conversely, in human children aged 4–5, the gene was found to be 30% more expressed in the Broca's areas of female children. The researchers suggested that the gene is more active in "the more communicative sex".

The expression of FOXP2 is subject to post-transcriptional regulation, particularly microRNA (miRNA), causing the repression of the FOXP2 3' untranslated region.

Three amino acid substitutions distinguish the human FOXP2 protein from that found in mice, while two amino acid substitutions distinguish the human FOXP2 protein from that found in chimpanzees, but only one of these changes is unique to humans. Evidence from genetically manipulated mice and human neuronal cell models suggests that these changes affect the neural functions of FOXP2.

Clinical significance

The FOXP2 gene has been implicated in several cognitive functions including; general brain development, language, and synaptic plasticity. The FOXP2 gene region acts as a transcription factor for the forkhead box P2 protein. Transcription factors affect other regions, and the forkhead box P2 protein has been suggested to also act as a transcription factor for hundreds of genes. This prolific involvement opens the possibility that the FOXP2 gene is much more extensive than originally thought. Other targets of transcription have been researched without correlation to FOXP2. Specifically, FOXP2 has been investigated in correlation with autism and dyslexia, however with no mutation was discovered as the cause. One well identified target is language. Although some research disagrees with this correlation, the majority of research shows that a mutated FOXP2 causes the observed production deficiency.

There is some evidence that the linguistic impairments associated with a mutation of the FOXP2 gene are not simply the result of a fundamental deficit in motor control. Brain imaging of affected individuals indicates functional abnormalities in language-related cortical and basal ganglia regions, demonstrating that the problems extend beyond the motor system.

Mutations in FOXP2 are among several (26 genes plus 2 intergenic) loci which correlate to ADHD diagnosis in adults – clinical ADHD is an umbrella label for a heterogeneous group of genetic and neurological phenomena which may result from FOXP2 mutations or other causes.

A 2020 genome-wide association study (GWAS) implicates single-nucleotide polymorphisms (SNPs) of FOXP2 in susceptibility to cannabis use disorder.

Language disorder

It is theorized that the translocation of the 7q31.2 region of the FOXP2 gene causes a severe language impairment called developmental verbal dyspraxia (DVD) or childhood apraxia of speech (CAS) So far this type of mutation has only been discovered in three families across the world including the original KE family. A missense mutation causing an arginine-to-histidine substitution (R553H) in the DNA-binding domain is thought to be the abnormality in KE. This would cause a normally basic residue to be fairly acidic and highly reactive at the body's pH. A heterozygous nonsense mutation, R328X variant, produces a truncated protein involved in speech and language difficulties in one KE individual and two of their close family members. R553H and R328X mutations also affected nuclear localization, DNA-binding, and the transactivation (increased gene expression) properties of FOXP2.

These individuals present with deletions, translocations, and missense mutations. When tasked with repetition and verb generation, these individuals with DVD/CAS had decreased activation in the putamen and Broca's area in fMRI studies. These areas are commonly known as areas of language function. This is one of the primary reasons that FOXP2 is known as a language gene. They have delayed onset of speech, difficulty with articulation including slurred speech, stuttering, and poor pronunciation, as well as dyspraxia. It is believed that a major part of this speech deficit comes from an inability to coordinate the movements necessary to produce normal speech including mouth and tongue shaping. Additionally, there are more general impairments with the processing of the grammatical and linguistic aspects of speech. These findings suggest that the effects of FOXP2 are not limited to motor control, as they include comprehension among other cognitive language functions. General mild motor and cognitive deficits are noted across the board. Clinically these patients can also have difficulty coughing, sneezing, or clearing their throats.

While FOXP2 has been proposed to play a critical role in the development of speech and language, this view has been challenged by the fact that the gene is also expressed in other mammals as well as birds and fish that do not speak. It has also been proposed that the FOXP2 transcription-factor is not so much a hypothetical 'language gene' but rather part of a regulatory machinery related to externalization of speech.

Evolution

Human FOXP2 gene and evolutionary conservation is shown in a multiple alignment (at bottom of figure) in this image from the UCSC Genome Browser. Note that conservation tends to cluster around coding regions (exons).

The FOXP2 gene is highly conserved in mammals. The human gene differs from that in non-human primates by the substitution of two amino acids, a threonine to asparagine substitution at position 303 (T303N) and an asparagine to serine substitution at position 325 (N325S). In mice it differs from that of humans by three substitutions, and in zebra finch by seven amino acids. One of the two amino acid differences between human and chimps also arose independently in carnivores and bats. Similar FOXP2 proteins can be found in songbirds, fish, and reptiles such as alligators.

DNA sampling from Homo neanderthalensis bones indicates that their FOXP2 gene is a little different though largely similar to those of Homo sapiens (i.e. humans). Previous genetic analysis had suggested that the H. sapiens FOXP2 gene became fixed in the population around 125,000 years ago. Some researchers consider the Neanderthal findings to indicate that the gene instead swept through the population over 260,000 years ago, before our most recent common ancestor with the Neanderthals. Other researchers offer alternative explanations for how the H. sapiens version would have appeared in Neanderthals living 43,000 years ago.

According to a 2002 study, the FOXP2 gene showed indications of recent positive selection. Some researchers have speculated that positive selection is crucial for the evolution of language in humans. Others, however, were unable to find a clear association between species with learned vocalizations and similar mutations in FOXP2. A 2018 analysis of a large sample of globally distributed genomes confirmed there was no evidence of positive selection, suggesting that the original signal of positive selection may be driven by sample composition. Insertion of both human mutations into mice, whose version of FOXP2 otherwise differs from the human and chimpanzee versions in only one additional base pair, causes changes in vocalizations as well as other behavioral changes, such as a reduction in exploratory tendencies, and a decrease in maze learning time. A reduction in dopamine levels and changes in the morphology of certain nerve cells are also observed.

Interactions

FOXP2 is known to regulate CNTNAP2, CTBP1, SRPX2 and SCN3A.

FOXP2 downregulates CNTNAP2, a member of the neurexin family found in neurons. CNTNAP2 is associated with common forms of language impairment.

FOXP2 also downregulates SRPX2, the 'Sushi Repeat-containing Protein X-linked 2'. It directly reduces its expression, by binding to its gene's promoter. SRPX2 is involved in glutamatergic synapse formation in the cerebral cortex and is more highly expressed in childhood. SRPX2 appears to specifically increase the number of glutamatergic synapses in the brain, while leaving inhibitory GABAergic synapses unchanged and not affecting dendritic spine length or shape. On the other hand, FOXP2's activity does reduce dendritic spine length and shape, in addition to number, indicating it has other regulatory roles in dendritic morphology.

In other animals

Chimpanzees

In chimpanzees, FOXP2 differs from the human version by two amino acids. A study in Germany sequenced FOXP2's complementary DNA in chimps and other species to compare it with human complementary DNA in order to find the specific changes in the sequence. FOXP2 was found to be functionally different in humans compared to chimps. Since FOXP2 was also found to have an effect on other genes, its effects on other genes is also being studied. Researchers deduced that there could also be further clinical applications in the direction of these studies in regards to illnesses that show effects on human language ability.

Mice

In a mouse FOXP2 gene knockouts, loss of both copies of the gene causes severe motor impairment related to cerebellar abnormalities and lack of ultrasonic vocalisations normally elicited when pups are removed from their mothers. These vocalizations have important communicative roles in mother–offspring interactions. Loss of one copy was associated with impairment of ultrasonic vocalisations and a modest developmental delay. Male mice on encountering female mice produce complex ultrasonic vocalisations that have characteristics of song. Mice that have the R552H point mutation carried by the KE family show cerebellar reduction and abnormal synaptic plasticity in striatal and cerebellar circuits.

Humanized FOXP2 mice display altered cortico-basal ganglia circuits. The human allele of the FOXP2 gene was transferred into the mouse embryos through homologous recombination to create humanized FOXP2 mice. The human variant of FOXP2 also had an effect on the exploratory behavior of the mice. In comparison to knockout mice with one non-functional copy of FOXP2, the humanized mouse model showed opposite effects when testing its effect on the levels of dopamine, plasticity of synapses, patterns of expression in the striatum and behavior that was exploratory in nature.

When FOXP2 expression was altered in mice, it affected many different processes including the learning motor skills and the plasticity of synapses. Additionally, FOXP2 is found more in the sixth layer of the cortex than in the fifth, and this is consistent with it having greater roles in sensory integration. FOXP2 was also found in the medial geniculate nucleus of the mouse brain, which is the processing area that auditory inputs must go through in the thalamus. It was found that its mutations play a role in delaying the development of language learning. It was also found to be highly expressed in the Purkinje cells and cerebellar nuclei of the cortico-cerebellar circuits. High FOXP2 expression has also been shown in the spiny neurons that express type 1 dopamine receptors in the striatum, substantia nigra, subthalamic nucleus and ventral tegmental area. The negative effects of the mutations of FOXP2 in these brain regions on motor abilities were shown in mice through tasks in lab studies. When analyzing the brain circuitry in these cases, scientists found greater levels of dopamine and decreased lengths of dendrites, which caused defects in long-term depression, which is implicated in motor function learning and maintenance. Through EEG studies, it was also found that these mice had increased levels of activity in their striatum, which contributed to these results. There is further evidence for mutations of targets of the FOXP2 gene shown to have roles in schizophrenia, epilepsy, autism, bipolar disorder and intellectual disabilities.

Bats

FOXP2 has implications in the development of bat echolocation. Contrary to apes and mice, FOXP2 is extremely diverse in echolocating bats. Twenty-two sequences of non-bat eutherian mammals revealed a total number of 20 nonsynonymous mutations in contrast to half that number of bat sequences, which showed 44 nonsynonymous mutations. All cetaceans share three amino acid substitutions, but no differences were found between echolocating toothed whales and non-echolocating baleen cetaceans. Within bats, however, amino acid variation correlated with different echolocating types.

Birds

In songbirds, FOXP2 most likely regulates genes involved in neuroplasticity. Gene knockdown of FOXP2 in area X of the basal ganglia in songbirds results in incomplete and inaccurate song imitation.[8] Overexpression of FOXP2 was accomplished through injection of adeno-associated virus serotype 1 (AAV1) into area X of the brain. This overexpression produced similar effects to that of knockdown; juvenile zebra finch birds were unable to accurately imitate their tutors. Similarly, in adult canaries, higher FOXP2 levels also correlate with song changes.

Levels of FOXP2 in adult zebra finches are significantly higher when males direct their song to females than when they sing song in other contexts. "Directed" singing refers to when a male is singing to a female usually for a courtship display. "Undirected" singing occurs when for example, a male sings when other males are present or is alone. Studies have found that FoxP2 levels vary depending on the social context. When the birds were singing undirected song, there was a decrease of FoxP2 expression in Area X. This downregulation was not observed and FoxP2 levels remained stable in birds singing directed song.

Differences between song-learning and non-song-learning birds have been shown to be caused by differences in FOXP2 gene expression, rather than differences in the amino acid sequence of the FOXP2 protein.

Zebrafish

In zebrafish, FOXP2 is expressed in the ventral and dorsal thalamus, telencephalon, diencephalon where it likely plays a role in nervous system development. The zebrafish FOXP2 gene has an 85% similarity to the human FOX2P ortholog.

History

FOXP2 and its gene were discovered as a result of investigations on an English family known as the KE family, half of whom (15 individuals across three generations) had a speech and language disorder called developmental verbal dyspraxia. Their case was studied at the Institute of Child Health of University College London.[62] In 1990, Myrna Gopnik, Professor of Linguistics at McGill University, reported that the disorder-affected KE family had severe speech impediment with incomprehensible talk, largely characterized by grammatical deficits. She hypothesized that the basis was not of learning or cognitive disability, but due to genetic factors affecting mainly grammatical ability. (Her hypothesis led to a popularised existence of "grammar gene" and a controversial notion of grammar-specific disorder.) In 1995, the University of Oxford and the Institute of Child Health researchers found that the disorder was purely genetic. Remarkably, the inheritance of the disorder from one generation to the next was consistent with autosomal dominant inheritance, i.e., mutation of only a single gene on an autosome (non-sex chromosome) acting in a dominant fashion. This is one of the few known examples of Mendelian (monogenic) inheritance for a disorder affecting speech and language skills, which typically have a complex basis involving multiple genetic risk factors.

The FOXP2 gene is located on the long (q) arm of chromosome 7, at position 31.

In 1998, Oxford University geneticists Simon Fisher, Anthony Monaco, Cecilia S. L. Lai, Jane A. Hurst, and Faraneh Vargha-Khadem identified an autosomal dominant monogenic inheritance that is localized on a small region of chromosome 7 from DNA samples taken from the affected and unaffected members. The chromosomal region (locus) contained 70 genes. The locus was given the official name "SPCH1" (for speech-and-language-disorder-1) by the Human Genome Nomenclature committee. Mapping and sequencing of the chromosomal region was performed with the aid of bacterial artificial chromosome clones. Around this time, the researchers identified an individual who was unrelated to the KE family but had a similar type of speech and language disorder. In this case, the child, known as CS, carried a chromosomal rearrangement (a translocation) in which part of chromosome 7 had become exchanged with part of chromosome 5. The site of breakage of chromosome 7 was located within the SPCH1 region.

In 2001, the team identified in CS that the mutation is in the middle of a protein-coding gene. Using a combination of bioinformatics and RNA analyses, they discovered that the gene codes for a novel protein belonging to the forkhead-box (FOX) group of transcription factors. As such, it was assigned with the official name of FOXP2. When the researchers sequenced the FOXP2 gene in the KE family, they found a heterozygous point mutation shared by all the affected individuals, but not in unaffected members of the family and other people. This mutation is due to an amino-acid substitution that inhibits the DNA-binding domain of the FOXP2 protein. Further screening of the gene identified multiple additional cases of FOXP2 disruption, including different point mutations and chromosomal rearrangements, providing evidence that damage to one copy of this gene is sufficient to derail speech and language development.

Inhalant

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