Cognitive neuropsychological research on inter- and intra-hemispheric interference

半球间和半球内干扰的认知神经心理学研究

基本信息

批准号：
15530480
负责人：
YOSHIZAKI Kazuhito
金额：
$ 2.37万
依托单位：
Aichi Shukutoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

The main aim of the present research was to investigate interhemispheric interaction in local and global processing. A pair of a single letter and a Navon-type hierarchical pattern was presented to a unilateral (Within-Field) and a bilateral visual-fields (Across-Field). In the first series of experiments, which used a small-single letter as a target, the local interhemispheric interference in Across-Field was larger when the target was presented to the right hemisphere (RH) than when it was presented to the left hemisphere. In the second series of experiments, which used a large-single letter as a target, only a global interference appeared and its size was constant irrespective of the side where the distracter was presented. These findings suggested that interhemispheric interaction would be modulated by attentional allocation.The second aim of the current study was to examine the effect of interference on interhemispheric interaction in the reverse-stroop task. In two experiments, color-word in black ink and color-patch in red or blue ink were briefly presented to a bilateral visual-field (BVF). The participants were asked to identify the color word, ignoring the color patch. In Experiment 1, color-words written in kanji character were used as target ("赤" or "青"). In Experiment 2, color-words written in kana character were used as target ("あか" or "あお"). The result in first experiment showed that the size of the interference effect was invariant irrespective of the visual-field of the target. On the contrary, in the second experiment, the interference effect was larger in the condition where the kana color-word was presented to LVF than to RVF. These result suggested that the interference effect would be modulated by the dominant hemisphere for processing the target.

本研究的主要目的是研究局部和全局处理中半球间的相互作用，将一对单个字母和 Navon 型分层模式呈现给单侧（视野内）和双边视野（跨视野）。在使用小单字母作为目标的第一系列实验中，当目标呈现给右半球（RH）时，跨场的局部半球间干扰更大。在使用大单个字母作为目标的第二系列实验中，仅出现全局干扰，并且无论干扰物出现在哪一侧，其大小都是恒定的，这些结果表明半球间相互作用。当前研究的第二个目的是在反向斯特罗普任务中检查干扰对半球间相互作用的影响，在两个实验中，黑色墨水的颜色词和红色或蓝色的颜色块。在实验 1 中，参与者被要求识别颜色词，而忽略颜色块，以汉字字符书写的颜色词被用作目标（“红色”或“”）。在实验2中，用假名字符书写的颜色词被用作目标（“Aka”或“Ao”）。第一个实验的结果表明，干扰效果的大小是不变的，与视觉无关。的领域相反，在第二个实验中，在向 LVF 呈现假名颜色词的情况下，干扰效果比向 RVF 呈现的干扰效果更大。这些结果表明，干扰效果会受到优势半球的调节，以处理目标。目标。