Journal ArticleDOI
Activation of Auditory Cortex During Silent Lipreading
Gemma A. Calvert,Edward T. Bullmore,Michael Brammer,Ruth Campbell,Steven Williams,Philip McGuire,Peter W.R. Woodruff,Susan D. Iversen,Anthony S. David +8 more
TLDR
Three experiments suggest that these auditory cortical areas are not engaged when an individual is viewing nonlinguistic facial movements but appear to be activated by silent meaningless speechlike movements (pseudospeech), which supports psycholinguistic evidence that seen speech influences the perception of heard speech at a prelexical stage.Abstract:
Watching a speaker's lips during face-to-face conversation (lipreading) markedly improves speech perception, particularly in noisy conditions. With functional magnetic resonance imaging it was found that these linguistic visual cues are sufficient to activate auditory cortex in normal hearing individuals in the absence of auditory speech sounds. Two further experiments suggest that these auditory cortical areas are not engaged when an individual is viewing nonlinguistic facial movements but appear to be activated by silent meaningless speechlike movements (pseudospeech). This supports psycholinguistic evidence that seen speech influences the perception of heard speech at a prelexical stage.read more
Citations
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Journal ArticleDOI
The distributed human neural system for face perception.
TL;DR: A model for the organization of this system that emphasizes a distinction between the representation of invariant and changeable aspects of faces is proposed and is hierarchical insofar as it is divided into a core system and an extended system.
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Imaging Cognition II: An Empirical Review of 275 PET and fMRI Studies
Roberto Cabeza,Lars Nyberg +1 more
TL;DR: Analysis of regional activations across cognitive domains suggested that several brain regions, including the cerebellum, are engaged by a variety of cognitive challenges.
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Social perception from visual cues : role of the STS region
TL;DR: Single-cell recordings in monkeys, and neurophysiological and neuroimaging studies in humans, reveal that cerebral cortex in and near the superior temporal sulcus (STS) region is an important component of this perceptual system.
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Toward a mechanistic psychology of dialogue
Martin J. Pickering,Simon Garrod +1 more
TL;DR: A mechanistic account of dialogue, the interactive alignment account, is proposed and used to derive a number of predictions about basic language processes, and the need for a grammatical framework that is designed to deal with language in dialogue rather than monologue is considered.
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Functional imaging of 'theory of mind'
TL;DR: Three areas are consistently activated in association with theory of mind: the anterior paracingulate cortex, the superior temporal sulci and the temporal poles bilaterally.
References
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Book
The Cognitive Neurosciences
TL;DR: The fourth edition of The Cognitive Neurosciences continues to chart new directions in the study of the biologic underpinnings of complex cognition -the relationship between the structural and physiological mechanisms of the nervous system and the psychological reality of the mind as discussed by the authors.
Journal ArticleDOI
Dynamic magnetic resonance imaging of human brain activity during primary sensory stimulation.
Kenneth K. Kwong,John W. Belliveau,David A. Chesler,Inna E. Goldberg,Robert M. Weisskoff,Brigitte P. Poncelet,David N. Kennedy,Bernice E. Hoppel,Mark S. Cohen,Robert Turner,Hong-Ming Cheng,Thomas J. Brady,Bruce R. Rosen +12 more
TL;DR: In this paper, a series of images were acquired continuously with the same imaging pulse sequence (either gradient echo or spin-echo inversion recovery) during task activation, and a significant increase in signal intensity (paired t test; P less than 0.001) of 1.8% +/- 0.9% was observed in the primary visual cortex (V1) of seven normal volunteers.
Journal ArticleDOI
Movement-related effects in fMRI time-series
TL;DR: The empirical analyses suggest that (in extreme situations) over 90% of fMRI signal can be attributed to movement, and that this artifactual component can be successfully removed.
Journal ArticleDOI
Visual contribution to speech intelligibility in noise
W. H. Sumby,Irwin Pollack +1 more
TL;DR: In this article, the visual contribution to oral speech intelligibility was examined as a function of the speech-to-noise ratio and of the size of the vocabulary under test.
Journal ArticleDOI
The neural correlates of the verbal component of working memory.
TL;DR: Comparisons of distribution of cerebral blood flow in these conditions localized the phonological store to the left supramarginal gyrus whereas the subvocal rehearsal system was associated with Broca's area, the first demonstration of the normal anatomy of the components of the 'articulatory loop'.