Evert Denise L, Kmen Meghan
Psychology, Skidmore College, Saratoga Springs, NY 12866, USA.
Brain Cogn. 2003 Feb;51(1):115-42. doi: 10.1016/s0278-2626(02)00528-6.
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.
这些实验评估了刺激暴露持续时间与整体和局部加工的半球不对称性之间的关系。在一项选择性注意任务中测试了六个持续时间（27、40、53、67、80和147毫秒），其中分层字母形式单侧呈现给左或右视野。结果表明，左半球-局部不对称性比右半球-整体不对称性更常出现，并且不对称性最常见于测试持续时间的中间范围。结果模式强调了进一步研究那些能在健康个体中可靠地证明预测不对称性的条件的重要性。
