Perceptual and semantic sources of category-specific effects: Event-related potentials during picture and word categorization
Perceptual and semantic sources of category-specific effects: Event-related potentials during picture and word categorization
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DOI：
10.3758/bf03195745
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发表时间：
2001-01-01
影响因子：
2.4
通讯作者：
Kiefer, M
中科院分区：
文献类型：
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作者：
Kiefer, M
在两个实验中，评估了物体类别对事件相关电位（ERP）的影响，同时受试者使用涉及自然（例如动物）和人工（例如工具）类别的物体的图片和文字进行高级分类。首先，显示一个类别探针，在实验 1 中以名称形式呈现，在实验 2 中以图片形式呈现。此后，显示目标刺激。在这两个实验中，对目标的 ERP 分析揭示了在图像模式中目标出现后约 160 毫秒时类别的影响，这可归因于感知处理中类别特定的差异。随后，在大约 300-500 毫秒之间，自然类别和人工类别在目标和类别模式中引发了类似的 ERP 效应。这些发现表明，感知和语义来源有助于特定类别的影响。他们支持这样的观点：与不同类别相关的语义知识在多个子系统中表示，这些子系统同样可以通过图片和文字访问。
In two experiments the effect of object category on event-related potentials (ERPs) was assessed while subjects performed superordinate categorizations with pictures and words referring to objects from natural (e.g., animal) and artifactual (e.g., tool) categories. First, a category probe was shown that was presented as name in Experiment 1 and as picture in Experiment 2. Thereafter, the target stimulus was displayed. In both experiments, analyses of the ERPs to the targets revealed effects of category at about 160 msec after target onset in the pictorial modality, which can be attributed to category-specific differences in perceptual processing. Later, between about 300-500 msec, natural and artifactual categories elicited similar ERP effects across target and category modalities. These findings suggest that perceptual as well as semantic sources contribute to category-specific effects. They support the view that semantic knowledge associated with different categories is represented in multiple subsystems that are similarly accessed by pictures and words.