Hemispheric asymmetries for global and local processing as a function of stimulus exposure duration

被引：28

作者：

Evert, DL ^{[1
]}

Kmen, M ^{[1
]}

机构：

[1] Skidmore Coll, Saratoga Springs, NY 12866 USA

来源：

BRAIN AND COGNITION | 2003年 / 51卷 / 01期

基金：

美国国家科学基金会;

关键词：

global and local processing; levels of processing; hemispheric asymmetries; hemispheric specialization; task demands; exposure duration; selective attention;

D O I：

10.1016/S0278-2626(02)00528-6

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The experiments assess the relationship between stimulus exposure duration and hemispheric asymmetries for global and local processing. Six durations (27, 40, 53, 67, 80, and 147 ms) were tested in a selective attention task in which hierarchical letterforms were presented unilaterally to the left or right visual field. The results indicated that left hemisphere-local asymmetries were demonstrated more often than right hemisphere-global asymmetries and that asymmetries were most commonly found in the middle range of durations tested. The pattern of results emphasizes the importance of further study into those conditions under which the predicted asymmetries can be reliably demonstrated in healthy individuals. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：115 / 142

页数：28

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