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Activity patterns in human motion-sensitive areas depend on the interpretation of global motion.

Numerous imaging studies have contributed to the localization of motion-sensitive areas in the human brain. It is, however, still unclear how these areas contribute to global motion perception. Here, we investigate with functional MRI whether the motion-sensitive area hMT super(+)/V5 is involved in... Full description

Journal Title: Proceedings of the National Academy of Sciences of the United States of America October 15, 2002, Vol.99(21), pp.13914-13919
Main Author: Castelo-Branco, Miguel
Other Authors: Formisano, Elia , Backes, Walter , Zanella, Friedhelm , Neuenschwander, Sergio , Singer, Wolf , Goebel, Rainer
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0027-8424
Link: http://search.proquest.com/docview/72183079/?pq-origsite=primo
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recordid: proquest72183079
title: Activity patterns in human motion-sensitive areas depend on the interpretation of global motion.
format: Article
creator:
  • Castelo-Branco, Miguel
  • Formisano, Elia
  • Backes, Walter
  • Zanella, Friedhelm
  • Neuenschwander, Sergio
  • Singer, Wolf
  • Goebel, Rainer
subjects:
  • Brain–Anatomy & Histology
  • Humans–Physiology
  • Magnetic Resonance Imaging–Physiology
  • Motion Perception–Physiology
  • Pattern Recognition, Visual–Physiology
  • Photic Stimulation–Physiology
  • Time Factors–Physiology
ispartof: Proceedings of the National Academy of Sciences of the United States of America, October 15, 2002, Vol.99(21), pp.13914-13919
description: Numerous imaging studies have contributed to the localization of motion-sensitive areas in the human brain. It is, however, still unclear how these areas contribute to global motion perception. Here, we investigate with functional MRI whether the motion-sensitive area hMT super(+)/V5 is involved in perceptual segmentation and integration of motion signals. Stimuli were overlapping moving gratings that can be perceived either as two independently moving, transparent surfaces or as a single surface moving in an intermediate direction. We examined whether motion-sensitive area hMT super(+)/V5 is involved in mediating the switches between the two percepts. The data show differential activation of hMT super(+)/V5 with perceptual switches, suggesting that these are associated with a reconfiguration of cell assemblies in this area.
language: eng
source:
identifier: ISSN: 0027-8424
fulltext: fulltext
issn:
  • 00278424
  • 0027-8424
url: Link


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titleActivity patterns in human motion-sensitive areas depend on the interpretation of global motion.
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descriptionNumerous imaging studies have contributed to the localization of motion-sensitive areas in the human brain. It is, however, still unclear how these areas contribute to global motion perception. Here, we investigate with functional MRI whether the motion-sensitive area hMT super(+)/V5 is involved in perceptual segmentation and integration of motion signals. Stimuli were overlapping moving gratings that can be perceived either as two independently moving, transparent surfaces or as a single surface moving in an intermediate direction. We examined whether motion-sensitive area hMT super(+)/V5 is involved in mediating the switches between the two percepts. The data show differential activation of hMT super(+)/V5 with perceptual switches, suggesting that these are associated with a reconfiguration of cell assemblies in this area.
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