Neural gate keeping: The role of interhemispheric interactions in resource allocation and selective filtering

被引:7
作者
Mikels, JA [1 ]
Reuter-Lorenz, PA [1 ]
机构
[1] Univ Michigan, Dept Psychol, Ann Arbor, MI 48109 USA
关键词
D O I
10.1037/0894-4105.18.2.328
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
The corpus callosum has been proposed to contribute to attention by modulating resource allocation between the hemispheres and filtering interhemispheric signal transmission (M. T. Banich, 1998). The resource allocation hypothesis predicts that interhemispheric interactions become more advantageous with increasing resource demands. The selective filtering hypothesis predicts that interhemispheric interactions become less advantageous as filtering requirements increase. The authors tested both predictions by comparing within- and across-hemi sphere letter matching under dual-task (Experiment 1) and selective attention conditions (Experiment 2). Task-specific resource demands (i.e., letter processing load) alter the bihemispheric advantage. but the general demand imposed by an unrelated secondary task does not. Filtering requirements influenced the advantage from interhemispheric interactions, providing new evidence for the role of the corpus callosum in selective attention.
引用
收藏
页码:328 / 339
页数:12
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