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

M. Castelo-Branco*, E. Formisano, W.H. Backes, F. Zanella, S. Neuenschwander, W. Singer, R.W. Goebel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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(+)/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(+)/V5 is involved in mediating the switches between the two percepts. The data show differential activation of hMT(+)/V5 with perceptual switches, suggesting that these are associated with a reconfiguration of cell assemblies in this area.
Original languageEnglish
Pages (from-to)13914-9
JournalProceedings of the National Academy of Sciences of the United States of America
Volume1599(21)
DOIs
Publication statusPublished - 1 Jan 2002

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