Intersubject Synchronization of Cortical Activity during Natural Vision

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

Research output: Contribution to journalArticlepeer-review

904 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

  • General

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