期刊
SOCIAL COGNITIVE AND AFFECTIVE NEUROSCIENCE
卷 11, 期 12, 页码 1882-1893出版社
OXFORD UNIV PRESS
DOI: 10.1093/scan/nsw106
关键词
EEG; inter-brain synchrony; neural oscillation; oxytocin; social coordination
资金
- National Natural Science Foundation of China [31421003, 31470986, 91332125]
- Ministry of Education of China [20130001110049]
- Chinese Postdoctoral Science Foundation [2011M500171, 2012T50006]
Recent brain imaging research has revealed oxytocin (OT) effects on an individual's brain activity during social interaction but tells little about whether and how OT modulates the coherence of inter-brain activity related to two individuals' coordination behavior. We developed a new real-time coordination game that required two individuals of a dyad to synchronize with a partner (coordination task) or with a computer (control task) by counting in mind rhythmically. Electroencephalography (EEG) was recorded simultaneously from a dyad to examine OT effects on inter-brain synchrony of neural activity during interpersonal coordination. Experiment 1 found that dyads showed smaller interpersonal time lags of counting and greater inter-brain synchrony of alpha-band neural oscillations during the coordination (vs control) task and these effects were reliably observed in female but not male dyads. Moreover, the increased alpha-band inter-brain synchrony predicted better interpersonal behavioral synchrony across all participants. Experiment 2, using a double blind, placebo-controlled between-subjects design, revealed that intranasal OT vs placebo administration in male dyads improved interpersonal behavioral synchrony in both the coordination and control tasks but specifically enhanced alpha-band interbrain neural oscillations during the coordination task. Our findings provide first evidence that OT enhances inter-brain synchrony in male adults to facilitate social coordination.
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