Cerebral mechanisms for suppression of inappropriate information during sentence comprehension
Cerebral mechanisms for suppression of inappropriate information during sentence comprehension
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DOI：
10.1006/brln.1996.0046
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发表时间：
1996-05-01
影响因子：
2.5
通讯作者：
Gernsbacher, MA
中科院分区：
文献类型：
--
作者：
Faust, ME;Gernsbacher, MA
在两个实验中，我们调查了在句子理解过程中，随着时间的推移，在两个大脑半球中，来自中心文本不适当信息的干扰被减弱或抑制的程度。受试者看到中央呈现的句子结束于一个同音异义词或一个同形异义词，并作出快速判断，以横向呈现的测试词是否与句子的整体含义有关。抑制上下文不适当的形式的同音异义词被发现时，测试词被提交给任何半野，但抑制不适当的意义的同形异义词被发现只有当测试词被提交给右视觉半野。同形词实验的结果与左右半球语义选择系统在性质上不同的假设是一致的。同音异义词实验的结果表明，虽然左半球可能在抑制方面更有效，但两个半球都具有在某种程度上抑制不适当信息的能力。(C)出版社：Academic Press，Inc.
In two experiments we investigated the extent to which interference from centextually inappropriate information was attenuated or suppressed over time in the two cerebral hemispheres during sentence comprehension. Subjects viewed centrally presented sentences ending in either a homophone or a homograph and made speeded judgments as to whether a laterally presented test word was related to the overall meaning of the sentence. Suppression of contextually inappropriate forms of homophones was found when test words were presented to either hemifield, but suppression of inappropriate senses of homographs was found only when test words were presented to the right visual hemifield. The results from the homograph experiment are consistent with the hypothesis that right and left hemisphere semantic selection systems operate in qualitatively different ways. The results from the homophone experiment suggest that while the left hemisphere may be more efficient at suppression, both hemispheres possess the ability to suppress inappropriate information to some degree. (C) 1996 Academic Press, Inc.