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
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-30 至 1998-08-31
• 项目状态: 已结题
• 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

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.

描述：本提案中审查的主要假设是 左半球专门用于处理高频刺激 视觉和试镜，右半球专业 在两种方式中处理低频刺激。 半球 提出了视力中不同空间频率的专业化 由Sergent，调查员及其合作者提供 证据表明，平行专业可能会出现声音频率。 该提案进一步研究了不对称半球的性质 专业化高频和低频信息的专业化 通过检查正常受试者的听觉不对称，试听和视力 （实验1和2），患者的听觉和视觉不对称 局灶性病变（实验3和4），正常情况下的跨模式比较 受试者（实验5、6和7）和语音的听觉不对称 正常和患者组的感知（实验8-11）。 此外， 视觉和试听中半球不对称的连接主义模型 提出了。