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HEMISPHERIC SPECIALIZATION IN VISION AND AUDITION

HEMISPHERIC SPECIALIZATION IN VISION AND AUDITION
视觉和听觉的半球特化
批准号：
2271397
负责人：
RICHARD IVRY
金额：
$7.91万
依托单位：
UNIVERSITY OF CALIFORNIA BERKELEY
依托单位国家：
美国
项目类别：
财政年份：
1994
资助国家：
美国
项目状态：
已结题
起止时间：
1994-09-30 至 1998-08-31
来源：
https://reporter.nih.gov/project-details/2271397
关键词：
attention auditory stimulus brain interhemispheric activity cerebral dominance chronic brain damage hearing human subject neuroanatomy performance sound frequency temporal lobe /cortex disorder vision visual stimulus

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DESCRIPTION: The main hypothesis examined in this proposal is that the left hemisphere is specialized for processing high-frequency stimuli in vision and in audition, and that the right hemisphere is specialized for processing low-frequency stimuli in both modalities. Hemispheric specialization for different spatial frequencies in vision was proposed by Sergent, and the investigator and his collaborators have provided evidence that a parallel specialization may exit for sound frequencies. This proposal further examines the nature of asymmetric hemispheric specialization for high-frequency and low-frequency information in audition & in vision by examining auditory asymmetries in normal subjects (Experiments 1 and 2), auditory and visual asymmetries in patients with focal lesions (Experiments 3 and 4), crossmodal comparisons in normal subjects (Experiments 5, 6 and 7), and auditory asymmetries for speech perception in normal and patient groups (Experiments 8-11). In addition, a connectionist model of hemispheric asymmetries in vision and audition is proposed.
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