Hopkins W D
Department of Psychology, Berry College, Mount Berry, GA 30149-5029, USA.
Neuropsychologia. 1997 Mar;35(3):343-8. doi: 10.1016/s0028-3932(96)00089-9.
This study examined laterality in global and local processing of hierarchical compound stimuli in seven chimpanzees (Pan troglodytes). A divided visual half-field paradigm was used that allowed for unilateral presentation of compound stimuli to either the left or right hemisphere. Comparison stimuli differing on the basis of their global configuration, local elements or both features followed sample stimulus presentation. Subjects were required to accurately discriminate the comparison stimuli on the basis of these features relative to the sample stimulus. No laterality effects were found for accuracy; however, for reaction time, a significant interaction was found between visual field and processing mode. An overall right visual field advantage was found for local processing but no visual field differences for global processing. The overall results are consistent with previous findings in humans and suggests homologous lateralization in chimpanzees and humans.
本研究考察了七只黑猩猩（Pan troglodytes）在对分层复合刺激进行整体和局部加工时的偏侧性。采用了一种分开的视觉半视野范式，该范式允许将复合刺激单侧呈现给左半球或右半球。在呈现样本刺激之后，呈现基于整体构型、局部元素或两者特征而不同的比较刺激。要求受试者根据这些特征相对于样本刺激准确区分比较刺激。在准确性方面未发现偏侧性效应；然而，在反应时间上，发现视野和加工模式之间存在显著交互作用。在局部加工中发现了整体上的右视野优势，但在整体加工中未发现视野差异。总体结果与先前在人类中的研究结果一致，并表明黑猩猩和人类存在同源的偏侧化。
