Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study.

Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study. Research Abstract Details 

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Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study. Abstract Text:

Sophie K Scott,Stuart Rosen,Harriet Lang,Richard J S Wise,Sophie K Scott,Stuart Rosen,Harriet Lang,Richard J S Wise,

Functional imaging studies of speech perception in the human brain have identified a key role for auditory association areas in the temporal lobes (bilateral superior temporal gyri and sulci) in the perceptual processing of the speech signal. This is extended to suggest some functional specialization within this bilateral system, with a particular role for the left anterior superior temporal sulcus (STS) in processing intelligible speech. In the current study, noise-vocoded speech was used to vary the intelligibility of speech parametrically. This replicated the finding of a selective response to intelligibility in speech in the left anterior superior temporal sulcus, in contrast to the posterior superior temporal sulcus, which showed a response profile insensitive to the degree of intelligibility. These results are related to theories of functional organization in the human auditory system, which have indicated that there are separate processing streams, with different functional roles, running anterior and posterior to primary auditory cortex. Specifically, it is suggested that an anterior stream processing intelligibility can be distinguished from a posterior stream associated with transient representations, important in spoken repetition and working memory.

Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study. Publishing Authors By Initials

SK Scott,S Rosen,H Lang,RJ Wise,SK Scott,S Rosen,H Lang,RJ Wise,

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Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: The Journal of the Acoustical Society of America

VOLUME: 120

Page Numbers: 1075-83

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ISSN: 0001-4966

DAY: 30

MONTH: Aug

YEAR: 2006

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LANGUAGE: eng

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Grant and Affiliation Information for Neural correlates of intelligibility in speech investigated with noise vocoded speech--a positron emission tomography study.

AFFILIATION: Department of Psychology, University College London, Gower Street, London WC1E 6BT, United Kingdom. sophie.scott@ucl.ac.uk

Country: United States

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MEDLINETA: J Acoust Soc Am

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