Differential contribution of between and within-brain coupling to movement synchronization.

Autor: Marton-Alper IZ; Department of Psychology, University of Haifa, Haifa, Israel., Markus A; Department of Psychology, University of Haifa, Haifa, Israel., Nevat M; Department of Psychology, University of Haifa, Haifa, Israel., Bennet R; Department of Psychology, University of Haifa, Haifa, Israel., Shamay-Tsoory SG; Department of Psychology, University of Haifa, Haifa, Israel.; The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, Israel.
Jazyk: angličtina
Zdroj: Human brain mapping [Hum Brain Mapp] 2023 Jul; Vol. 44 (10), pp. 4136-4151. Date of Electronic Publication: 2023 May 17.
DOI: 10.1002/hbm.26335
Abstrakt: A fundamental characteristic of the human brain that supports behavior is its capacity to create connections between brain regions. A promising approach holds that during social behavior, brain regions not only create connections with other brain regions within a brain, but also coordinate their activity with other brain regions of an interaction partner. Here we ask whether between-brain and within-brain coupling contribute differentially to movement synchronization. We focused on coupling between the inferior frontal gyrus (IFG), a brain region associated with the observation-execution system, and the dorsomedial prefrontal cortex (dmPFC), a region associated with error-monitoring and prediction. Participants, randomly divided into dyads, were simultaneously scanned with functional near infra-red spectroscopy (fNIRS) while performing an open-ended 3D hand movement task consisting of three conditions: back-to-back movement, free movement, or intentional synchronization. Results show that behavioral synchrony was higher in the intentional synchrony compared with the back-to-back and free movement conditions. Between-brain coupling in the IFG and dmPFC was evident in the free movement and intentional synchrony conditions but not in the back-to-back condition. Importantly, between-brain coupling was found to positively predict intentional synchrony, while within-brain coupling was found to predict synchronization during free movement. These results indicate that during intentional synchronization, brain organization changes such that between-brain networks, but not within-brain connections, contribute to successful communication, pointing to shift from a within-brain feedback loop to a two-brains feedback loop.
(© 2023 The Authors. Human Brain Mapping published by Wiley Periodicals LLC.)
Databáze: MEDLINE
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