Interbrain cortical synchronization encodes multiple aspects of social interactions in monkey pairs.

Journal Article (Journal Article)

While it is well known that the primate brain evolved to cope with complex social contingencies, the neurophysiological manifestation of social interactions in primates is not well understood. Here, concurrent wireless neuronal ensemble recordings from pairs of monkeys were conducted to measure interbrain cortical synchronization (ICS) during a whole-body navigation task that involved continuous social interaction of two monkeys. One monkey, the passenger, was carried in a robotic wheelchair to a food dispenser, while a second monkey, the observer, remained stationary, watching the passenger. The two monkeys alternated the passenger and the observer roles. Concurrent neuronal ensemble recordings from the monkeys' motor cortex and the premotor dorsal area revealed episodic occurrence of ICS with probability that depended on the wheelchair kinematics, the passenger-observer distance, and the passenger-food distance - the social-interaction factors previously described in behavioral studies. These results suggest that ICS represents specific aspects of primate social interactions.

Full Text

Duke Authors

Cited Authors

  • Tseng, P-H; Rajangam, S; Lehew, G; Lebedev, MA; Nicolelis, MAL

Published Date

  • March 29, 2018

Published In

Volume / Issue

  • 8 / 1

Start / End Page

  • 4699 -

PubMed ID

  • 29599529

Pubmed Central ID

  • PMC5876380

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/s41598-018-22679-x


  • eng

Conference Location

  • England