BILATERAL VISUAL-FIELD PROCESSING AND EVOKED-POTENTIAL INTERHEMISPHERIC TRANSMISSION TIME
BILATERAL VISUAL-FIELD PROCESSING AND EVOKED-POTENTIAL INTERHEMISPHERIC TRANSMISSION TIME
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DOI：
10.1016/0028-3932(93)90097-j
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发表时间：
1993-12-01
期刊：
影响因子：
2.6
通讯作者：
JEEVES, MA
中科院分区：
文献类型：
--
作者：
BROWN, WS;JEEVES, MA
通过比较双侧（与单侧）匹配字母的优势，与诱发电位测量半球间传输时间（EP-IHTT），研究了通过胼胝体进行半球间相互作用的效率与比较同时呈现给右侧和左侧视野的信息的速度和准确性之间的关系。主要发现是一个强相关性，表明反应时间较大的双边领域的优势与更快的EP-IHTT。然而，EP-IHTT和双侧优势之间的关联仅在从左半球到右半球的传输速度方面较强，而在相反方向的传输速度方面则不强。这些数据与不对称同源增强的假设一致，即方向不对称的胼胝体影响，其有利于右半球中的字母刺激的处理，从而允许增加双边视野比较的响应速度和准确性。
The relationship between the efficiency of interhemispheric interactions via the corpus callosum and the speed and accuracy in making comparisons of information simultaneously presented to the right and left visual fields was studied by comparing bilateral (vs unilateral) advantages in matching letters, with evoked potential measures of interhemispheric transmission time (EP-IHTT). The primary finding was a strong correlation suggesting that larger bilateral field advantages in reaction time are associated with faster EP-IHTT. However, the association between EP-IHTT and bilateral advantage was strong only for transmission speed from left hemisphere to right hemisphere, but not for speed of transmission in the opposite direction. The data are consistent with a hypothesis of asymmetric homologue enhancement, i.e. a directionally asymmetric callosal influence which facilitates processing of letter stimuli in the right hemisphere allowing for increased response speed and accuracy of bilateral visual field comparisons.