Intersubject Synchronization of Cortical Activity during Natural Vision

Uri Hasson, Yuval Nir, Ifat Levy, Galit Fuhrmann, Rafael Malach

Research output: Contribution to journalArticle

784 Scopus citations

Abstract

To what extent do all brains work alike during natural conditions? We explored this question by letting five subjects freely view half an hour of a popular movie white undergoing functional brain imaging. Applying an unbiased analysis in which spatiotemporal activity patterns in one brain were used to "model" activity in another brain, we found a striking level of voxel-by-voxel synchronization between individuals, not only in primary and secondary visual and auditory areas but also in association cortices. The results reveal a surprising tendency of individual brains to "tick collectively" during natural vision. The intersubject synchronization consisted of a widespread cortical activation pattern correlated with emotionally arousing scenes and regionally selective components. The characteristics of these activations were revealed with the use of an open-ended "reverse-correlation" approach, which inverts the conventional analysis by letting the brain signals themselves "pick up" the optimal stimuli for each specialized cortical area.

Original languageEnglish (US)
Pages (from-to)1634-1640
Number of pages7
JournalScience
Volume303
Issue number5664
DOIs
StatePublished - Mar 12 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

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