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“School of Cognitive Sciences”

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Paper   IPM / Cognitive Sciences / 7840
School of Cognitive Sciences
  Title:   Differences in Onset Latency of Macaque Inferotemporal Neural Responses to Primate and Non-primate Faces
  Author(s): 
1.  R. Kiani
2.  H. Esteky
3.  K. Tanaka
  Status:   Published
  Journal: J NEUROPHYSIOL
  Vol.:  94
  Year:  2005
  Pages:   1587-1596
  Supported by:  IPM
  Abstract:
Neurons in the visual system respond to different visual stimuli with different onset latencies. However, it has remained unknown which stimulus features, aside from stimulus contrast, determine the onset latencies of responses. To examine the possibility that response onset latencies carry information about complex object images, we recorded single-cell responses in the inferior temporal cortex of alert monkeys, while they viewed more than 1,000 object stimuli�. Many cells responded to human and non-primate animal faces with comparable magnitudes, but responded significantly more quickly to human faces than to non-primate animal faces. Differences in onset latency may be used to increase the coding capacity, or enhance or suppress information about particular object groups by time-dependent modulation. Keywords: RSVP, Categorization, Visual Cortex, Monkey


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