Horner M D, Freides D
Medical University of South Carolina.
Int J Neurosci. 1996 Jul;86(1-2):7-13. doi: 10.3109/00207459608986693.
Kosslyn's (1987) hypothesized cerebral hemispheric asymmetries for processing categorical and coordinate spatial relations were explored, using stimuli presented at varying degrees of retinal eccentricity. Thirty-three adult males performed hemifield reaction-time tasks requiring categorical or coordinate judgements. The hypothesized asymmetries were observed when stimuli were presented at 3 degrees of visual angle, but not at 1 or 9 degrees. Nevertheless, correlational analyses supported the existence of separate neural subsystems for categorical and coordinate processing. The results suggest that the model accurately predicts performance asymmetries only under specific conditions.
利用以不同视网膜离心率呈现的刺激，对科斯林（1987年）所假设的大脑半球在处理分类和坐标空间关系方面的不对称性进行了探究。33名成年男性完成了需要进行分类或坐标判断的半视野反应时任务。当刺激以3度视角呈现时，观察到了所假设的不对称性，但在1度或9度视角时未观察到。尽管如此，相关分析支持了存在用于分类和坐标处理的独立神经子系统。结果表明，该模型仅在特定条件下能准确预测表现的不对称性。
