物体分类的电生理关联：回归基础
Electrophysiological correlates of object categorization: back to basics.
作者信息
Large Mary-Ellen, Kiss Ivan, McMullen Patricia A
机构信息
Department of Psychology, Social Science Center, University of Western Ontario, London, Ontario, N6A 5C2, Canada.
出版信息
Brain Res Cogn Brain Res. 2004 Aug;20(3):415-26. doi: 10.1016/j.cogbrainres.2004.03.013.
The time course of visual object categorization as a function of electrophysiological activity in the brain was investigated using a variant of the "oddball" design. Category level was manipulated by sequentially presenting subordinate, basic or superordinate target objects among a variety of non-target objects. It was found that superordinate categorizations were performed more quickly and differentiated from basic level categorizations in amplitude early in visual processing (320-420 ms). In contrast, subordinate categorizations took longer to perform and differentiated from basic level categorizations in amplitude and latency at later stages (450-550 ms). Notably, these effects were observed using the same objects categorized at different levels suggesting that visually categorizing objects at varying levels of abstraction engaged specific cognitive processes. These results are consistent with research on rapid visual categorization that challenges the generality of basic category level superiority effects.
使用“oddball”设计的一个变体，研究了视觉物体分类的时间进程与大脑电生理活动之间的关系。通过在各种非目标物体中依次呈现从属、基本或上级目标物体来操纵类别水平。研究发现，上级分类执行得更快，并且在视觉处理早期（320 - 420毫秒），其幅度与基本水平分类有所不同。相比之下，从属分类执行时间更长，并且在后期阶段（450 - 550毫秒），其幅度和潜伏期与基本水平分类存在差异。值得注意的是，使用在不同水平分类的相同物体观察到了这些效应，这表明在不同抽象水平上对物体进行视觉分类涉及特定的认知过程。这些结果与快速视觉分类的研究一致，该研究对基本类别水平优势效应的普遍性提出了挑战。
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