how can audiovisual pathways enhance the temporal resolution of time-compressed speech in blind subjects?

Clics: 261
ID: 247439
2013
PDF Gratuit
Métriques de Qualité et de Performance de l'Article
Qualité Globale
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
Évaluation de la Qualité par IA
Non analysé
Readership in this journal
Popular

Ranked #666 of 1,131 articles by views in accounts of chemical research

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 1,131 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Résumé
In blind people, the visual channel cannot assist face-to-face communication via lipreading or visual prosody. Nevertheless, the visual system may enhance the evaluation of auditory information due to its cross-links to (1) the auditory system, (2) supramodal representations, and (3) frontal action-related areas. Apart from feedback or top-down support of, for example, the processing of spatial or phonological representations, experimental data have shown that the visual system can impact auditory perception at more basic computational stages such as temporal resolution. For example, blind as compared to sighted subjects are more resistant against backward masking, and this ability appears to be associated with activity in visual cortex. Regarding the comprehension of continuous speech, blind subjects can learn to use accelerated text-to-speech systems for "reading" texts at ultra-fast speaking rates (> 16 syllables/s), exceeding by far the normal range of 6 syllables/s. An fMRI study has shown that this ability, among other brain regions, significantly covaries with BOLD responses in bilateral pulvinar, right visual cortex, and left supplementary motor area. Furthermore, magnetoencephalographic (MEG) measurements revealed a particular component in right occipital cortex phase-locked to the syllable onsets of accelerated speech. In sighted people, the "bottleneck" for understanding time-compressed speech seems related to a demand for buffering phonological material and is, presumably, linked to frontal brain structures. On the other hand, the neurophysiological correlates of functions overcoming this bottleneck, seem to depend upon early visual cortex activity. The present Hypothesis and Theory paper outlines a model that aims at binding these data together, based on early cross-modal pathways that are already known from various audiovisual experiments considering cross-modal adjustments in space, time, and object recognition.
Clé de Référence
ehertrich2013frontiershow Utilisez cette clé pour citer automatiquement dans le manuscrit lors de l'utilisation de SciMatic Manuscript Manager ou Thesis Manager
Auteurs ;Ingo eHertrich;Susanne eDietrich;Hermann eAckermann
Revue accounts of chemical research
Année 2013
DOI
10.3389/fpsyg.2013.00530
URL
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00530/full
Mots-clés
speech perception visual cortex blindness

Citations

Aucune citation trouvée. Pour ajouter une citation, contactez l'administrateur à info@scimatic.org

Commentaires

Aucun commentaire pour le moment. Soyez le premier à commenter cet article.