Sokolov, AA;
Zeidman, P;
Erb, M;
Ryvlin, P;
Friston, KJ;
Pavlova, MA;
(2018)
Structural and effective brain connectivity underlying biological motion detection.
Proceedings of the National Academy of Sciences (PNAS)
, 115
(51)
E12034-E12042.
10.1073/pnas.1812859115.
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Abstract
Visual perception of body motion is of substantial value for social cognition and everyday life. By using an integrative approach to brain connectivity, the study sheds light on architecture and functional principles of the underlying cerebro-cerebellar network. This circuity is organized in a parallel rather than hierarchical fashion. This may explain why body-language reading is rather resilient to focal brain damage but severely affected in neuropsychiatric conditions with distributed network alterations. Furthermore, visual sensitivity to body motion is best predicted by specific top-down feedback to the early visual cortex, as well as functional communication (effective connectivity) and presence of white-matter pathways between the right fusiform gyrus and superior temporal sulcus. The findings allow better understanding of the social brain.
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