Matching categorical object representations in inferior temporal cortex of man and monkey.

Matching categorical object representations in inferior temporal cortex of man and monkey.
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DOI:
10.1016/j.neuron.2008.10.043
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发表时间:
2008-12-26
期刊:
影响因子:
16.2
通讯作者:
Bandettini PA
Bandettini PA
中科院分区:
医学1区
文献类型:
--
作者:
Kriegeskorte N;Mur M;Ruff DA;Kiani R;Bodurka J;Esteky H;Tanaka K;Bandettini PA

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下颞(IT)对象表征已被深入研究,在猴子和人类,但表征相同的特定对象从来没有被比较的物种。此外,信息技术在分类中的作用还没有得到很好的理解。在这里,我们向猴子和人类展示了相同的现实世界物体的图像,并测量了每个图像引起的IT反应模式。为了与物种之间的表示和计算模型,我们比较响应模式相异度矩阵。IT反应模式形成类别集群,在人和猴子之间匹配。簇对应于有生命和无生命的对象;在有生命的对象中,面和身体形成子簇。在每个类别中,IT区分个体样本,并且类别内样本相似性也在物种之间匹配。我们的研究结果表明,跨物种的灵长类IT可能拥有一个共同的代码,它结合了对象的分类和连续表示。
Inferior temporal (IT) object representations have been intensively studied in monkeys and humans, but representations of the same particular objects have never been compared between the species. Moreover, IT’s role in categorization is not well understood. Here, we presented monkeys and humans with the same images of real-world objects and measured the IT response pattern elicited by each image. In order to relate the representations between the species and to computational models, we compare response-pattern dissimilarity matrices. IT response patterns form category clusters, which match between man and monkey. The clusters correspond to animate and inanimate objects; within the animate objects, faces and bodies form subclusters. Within each category, IT distinguishes individual exemplars, and the within-category exemplar similarities also match between the species. Our findings suggest that primate IT across species may host a common code, which combines a categorical and a continuous representation of objects.
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