Intranasal oxytocin modulates EEG mu/alpha and beta rhythms during perception of biological motion

Anat Perry, Shlomo Bentin, Idan Shalev, Salomon Israel, Florina Uzefovsky, Dori Bar-On, Richard P. Ebstein

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

Abstract

Oxytocin (OT) plays a determining role in social and pair bonding in many vertebrates and increasing evidence suggests it is a social hormone also in humans. Indeed, intranasal administration of OT modulates several social cognitive processes in humans. Electrophysiological studies in humans associated the suppression of EEG in the mu/alpha and beta bands with perception of biological motion and social stimuli. It has been suggested that mu and beta suppression over sensory-motor regions reflects a resonance system in the human brain analogous to mirror neurons in the monkey. We therefore hypothesized that OT, a social hormone, would enhance this suppression, hence, for the first time, link the action of this neuropeptide with a human correlate of mirror neuron activity. Twenty-four students were administered 24. IU of OT or placebo intranasally in a robust, double-blind within-subject design. 45. min later participants were shown a point-light display of continuous biological motion of a human figure's walk. In the 8-10. Hz (low alpha/mu band) and in the 15-25. Hz beta band, a significant main effect of treatment showed that suppression was significantly enhanced in the OT versus the placebo conditions and that this suppression was widespread across the scalp. These results are a first step linking OT to the modulation of EEG rhythms in humans, suggesting that OT may have a role in allocating cortical resources to social tasks partly mediated by mirror neuron activity.

Original languageEnglish (US)
Pages (from-to)1446-1453
Number of pages8
JournalPsychoneuroendocrinology
Volume35
Issue number10
DOIs
StatePublished - Nov 1 2010

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Endocrine and Autonomic Systems
  • Psychiatry and Mental health
  • Biological Psychiatry

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