Presentation 2007/7/19
Neural Mechanisms of Auditory Awareness Involved in Perceptual Transitions
Hirohito M. KONDO, Makio KASHINO,
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Abstract(in English) Prolonged listening to a repeated word without a pause produces a series of illusory transitions of the physically unchanging word, which is called verbal transformation. Verbal transformations provide a rare opportunity to examine how auditory percepts are formed in the brain. The left inferior frontal cortex (IFC), anterior cingulate cortex (ACC), and the left prefrontal cortex were activated when perceptual transitions from one verbal form to another occurred. The number of perceptual transitions showed positive and negative correlations with signal intensity in the left IFC and the left ACC, respectively. The results suggest that active generation of verbal forms is linked with articulatory gestures for speech production and that the frequency of perceptual transitions is determined by a balance of the activations between the two brain regions.
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Keyword(in English) brain / activity / awareness / illusion / fMRI
Paper # SP2007-29
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Committee SP
Conference Date 2007/7/19(1days)
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Registration To Speech (SP)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Neural Mechanisms of Auditory Awareness Involved in Perceptual Transitions
Sub Title (in English)
Keyword(1) brain
Keyword(2) activity
Keyword(3) awareness
Keyword(4) illusion
Keyword(5) fMRI
1st Author's Name Hirohito M. KONDO
1st Author's Affiliation NTT Communication Science Laboratories, NTT Corporation()
2nd Author's Name Makio KASHINO
2nd Author's Affiliation NTT Communication Science Laboratories, NTT Corporation:ERATO Shimojo Implicit Brain Function Project, JST:Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
Date 2007/7/19
Paper # SP2007-29
Volume (vol) vol.107
Number (no) 165
Page pp.pp.-
#Pages 6
Date of Issue