Can semantic information be transferred between hemispheres in the split-brain?

Can semantic information be transferred between hemispheres in the split-brain?
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语义信息可以在裂脑的半球之间传递吗?

DOI:
10.1016/j.bandc.2004.02.028
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发表时间:
2004
期刊:
Brain and cognition.
影响因子:
--
通讯作者:
Kingstone,Alan
Kingstone,Alan
中科院分区:
--
文献类型:
--
作者:
Grabowecky,Marcia;Kingstone,Alan

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参考文献

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对左右半脑断开的脑裂患者进行的实验数据表明,每个半球的功能都有显著的专门化。同时,这些患者的日常生活也非常熟练。这种能力表明,在没有胼胝体的情况下,大脑半球之间的协调功能也可以获得一些不可或缺的信息。关于单词语义的信息是一种共享的信息吗?兰伯特(Lambert, 1991)的一项实验表明,可能是这样的。兰伯特报告说,当分离的大脑半球处理属于同一类别的单词时,生物/非生物单词分类被延迟。尽管其他的解释似是而非,兰伯特将这种效应描述为有语义来源的。我们试图在另外两名裂脑患者J.W.和v.p.身上复制原来的效果,并扩展原来的设计,以澄清假定的语义效应的来源。我们的结果表明,分裂的半球之间的任何语义交互都是不可靠的。因此,我们的研究增加了越来越多的文献表明,语义信息的皮层下转移更多的是虚幻而不是真实的。
Data from experiments with split-brain patients, who have had their left and right hemispheres disconnected, suggests a remarkable specialization of function within each hemisphere. At the same time, these patients conduct their daily lives with great proficiency. This ability suggests that some information integral to coordinated function between the hemispheres is available in the absence of the corpus callosum. Is information about the semantics of words one type of information that is shared? An experiment by Lambert (1991) suggests that it may be. Lambert reported that living/nonliving word categorization was delayed when disconnected hemispheres processed words belonging to the same category. Although other interpretations are plausible, Lambert described this effect as having a semantic source. We attempted to replicate the original effect with two additional split-brain patients, J.W. and V.P., and to extend the original design to clarify the source of the putative semantic effect. Our results indicate that any semantic interaction between the split hemispheres is not reliable. As such our study adds to the growing literature indicating that subcortical transfer of semantic information is more illusory than real.
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