Spatiotopic selectivity of BOLD responses to visual motion in human area MT

Giovanni D'Avossa, Michela Tosetti, Sofia Crespi, Laura Biagi, David C. Burr, Maria Concetta Morrone

Research output: Contribution to journalArticlepeer-review

Abstract

Many neurons in the monkey visual extrastriate cortex have receptive fields that are affected by gaze direction. In humans, psychophysical studies suggest that motion signals may be encoded in a spatiotopic fashion. Here we use functional magnetic resonance imaging to study spatial selectivity in the human middle temporal cortex (area MT or V5), an area that is clearly implicated in motion perception. The results show that the response of MT is modulated by gaze direction, generating a spatial selectivity based on screen rather than retinal coordinates. This area could be the neurophysiological substrate of the spatiotopic representation of motion signals.

Original languageEnglish
Pages (from-to)249-255
Number of pages7
JournalNature Neuroscience
Volume10
Issue number2
DOIs
Publication statusPublished - Feb 2007

ASJC Scopus subject areas

  • Neuroscience(all)

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