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Publication Detail
Silent speechreading in the absence of scanner noise: An event-related fMRI study
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    MacSweeney M, Amaro E, Calvert G, Campbell R, David AS, McGuire P, Williams SCR, Woll B, Brammer MJ
  • Publication date:
    2000
  • Pagination:
    1729, 1733
  • Journal:
    NeuroReport
  • Volume:
    11
  • Issue:
    8
  • Print ISSN:
    0959-4965
  • Keywords:
    Blood, control, fMRI, function, functional, language, Oxygen, scanner noise, speech, speech perception
Abstract
Measured activation during speechreading in the absence of acoustic scanner noise, using an event-related functional magnetic resonance imaging (MRI) design. In the experimental condition, hearing 21-29 yr old Ss were required to speechread random numbers from a silent speaker. Control Ss watched a static image of the same speaker with mouth closed and were required to subvocally count an intermittent visual cue. A single volume of images was collected to coincide with the estimated peak of the blood oxygen level dependent MRI response to these stimuli across multiple baseline and experimental trials. Silent speechreading led to greater activation in lateral temporal cortex relative to the control condition. This indicates that activation of auditory areas during silent speechreading is not a function of acoustic scanner noise and confirms that silent speechreading engages similar regions of the auditory cortex as listening to speech
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Experimental Psychology
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Division of Psychiatry
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Institute of Cognitive Neuroscience
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Div of Psychology & Lang Sciences
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