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Early Visual Information Processing and Hemispheric Function Asymmetries : Perspective from Cognitive Psychology and Cognitive Neuroscience

早期视觉信息处理和半球功能不对称：认知心理学和认知神经科学的视角

基本信息

批准号：
12610092
负责人：
MICHIMATA Chikashi
金额：
$ 2.24万
依托单位：
Sophia University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

项目摘要

The present study aimed at exploring functions of the left and right cerebral hemispheres from the viewpoint of early visual information processing. The entire project was subdivided into four parts. First, effects of attenuating the magnocellular pathway were investigated. This included an fMRI investigation for processing of hierarchically organized visual patterns (Study1, presented at an international conference), a behavioral experiment about temporal frequency processing (Study 2, published at University Bulletin), and a behavioral experiment about characteristics of upper- and lower-visual fields (Study 3, submitted to an international journal). Second, hemispheric difference for processing of spatial relation was investigated. This included behavioral experiments manipulating spatial frequency content of the stimulus (Studies 4 and 5, published in domestic and international journals respectively), a behavioral experiment about coarse coding mechanism (Study 6, presented at an international conference), and an fMRI investigation for processing of different spatial relations (Study 7, presented in a domestic conference). Third, dynamic changes of cerebral functions through experience were investigated by fMRI, using Soroban experts as subjects. Finally, these research topics are now extended to issues of attention (Study 9, presented in a domestic conference) and object recognition (Study 10, presented in a domestic conference).

本研究旨在从早期视觉信息加工的角度探讨左右脑半球的功能。整个项目被细分为四个部分。首先，研究了衰减大细胞通路的作用。这包括fMRI对分层组织视觉模式处理的调查（研究1，在国际会议上发表），关于时间频率处理的行为实验（研究2，发表在大学公报上），以及关于上下视野特征的行为实验（研究3，提交给国际期刊）。其次，研究了空间关系处理的半球差异。这包括操纵刺激空间频率内容的行为实验（研究4和5，分别发表在国内和国际期刊上），关于粗编码机制的行为实验（研究6，在一次国际会议上发表），以及不同空间关系处理的fMRI研究（研究7，在一次国内会议上发表）。第三，以索罗班专家为研究对象，利用功能磁共振成像（fMRI）研究经验对脑功能的动态变化。最后，这些研究主题现在扩展到关注问题（研究9，在国内会议上提出）和对象识别（研究10，在国内会议上提出）。