Interpersonal synchrony enhanced through 20 Hz phase-coupled dual brain stimulation.

摘要: Synchronous movement is a key component of social behaviour in several species including humans. Recent theories have suggested link between interpersonal synchrony brain oscillations and synchrony. The present study investigated this link. Using transcranial alternating current stimulation (tACS) applied over the left motor cortex, we induced beta band (20 Hz) pairs individuals who both performed finger-tapping task with right hand. In-phase or anti-phase were delivered during preparatory period prior to while tapping was performed. 20 Hz enhanced synchrony, compared sham stimulation, particularly for initial taps following period. This confirmed an analysis comparing real vs. pseudo pair surrogate data. No enhancement observed frequencies 2 (matching target frequency) 10 (alpha band). Thus, phase-coupling neural across two individuals' (resting) cortices supports alignment sensorimotor processes that regulate rhythmic action initiation, thereby facilitating establishment synchronous movement. Phase-locked dual provides promising method causal effects on social, cognitive processes.