論文

査読有り
2014年11月

Neural Substrates of View-Invariant Object Recognition Developed without Experiencing Rotations of the Objects

JOURNAL OF NEUROSCIENCE
  • Jun-ya Okamura
  • ,
  • Reona Yamaguchi
  • ,
  • Kazunari Honda
  • ,
  • Gang Wang
  • ,
  • Keiji Tanaka

34
45
開始ページ
15047
終了ページ
15059
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1523/JNEUROSCI.1898-14.2014
出版者・発行元
SOC NEUROSCIENCE

One fails to recognize an unfamiliar object across changes in viewing angle when it must be discriminated from similar distractor objects. View-invariant recognition gradually develops as the viewer repeatedly sees the objects in rotation. It is assumed that different views of each object are associated with one another while their successive appearance is experienced in rotation. However, natural experience of objects also contains ample opportunities to discriminate among objects at each of the multiple viewing angles. Our previous behavioral experiments showed that after experiencing a new set of object stimuli during a task that required only discrimination at each of four viewing angles at 30 degrees intervals, monkeys could recognize the objects across changes in viewing angle up to 60 degrees. By recording activities of neurons from the inferotemporal cortex after various types of preparatory experience, we here found a possible neural substrate for the monkeys' performance. For object sets that the monkeys had experienced during the task that required only discrimination at each of four viewing angles, many inferotemporal neurons showed object selectivity covering multiple views. The degree of view generalization found for these object sets was similar to that found for stimulus sets with which the monkeys had been trained to conduct view-invariant recognition. These results suggest that the experience of discriminating new objects in each of several viewing angles develops the partially view-generalized object selectivity distributed over many neurons in the inferotemporal cortex, which in turn bases the monkeys' emergent capability to discriminate the objects across changes in viewing angle.

リンク情報
DOI
https://doi.org/10.1523/JNEUROSCI.1898-14.2014
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000345220300022&DestApp=WOS_CPL
ID情報
  • DOI : 10.1523/JNEUROSCI.1898-14.2014
  • ISSN : 0270-6474
  • Web of Science ID : WOS:000345220300022

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