Enhancing anger perception with transcranial alternating current stimulation induced gamma oscillations

Agnieszka B. Janik*, Constantin Rezlescu, Michael J. Banissy

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

26 Citations (Scopus)

Abstract

Background In recent years a variety of neuroimaging studies have highlighted a role of neural oscillations in perception and cognition. However, surprisingly little is known about oscillatory activity underlying facial emotion perception. The limited number of studies that have addressed this question indicate that gamma oscillations are one mechanism underlying this process. Objective The present study aimed to further elucidate the role of neural oscillations within the gamma range in facial emotion perception in healthy adults by using transcranial alternating current stimulation (tACS). Methods To that effect we carried out three experiments with separate groups of participants using tACS to modulate occipital oscillations while participants completed facial anger and facial identity tasks. Results The results of these experiments indicated that modulating occipital gamma with 40 Hz tACS enhances facial anger perception. Conclusion This finding implicates an important role of occipital gamma oscillations in facial emotion perception.

Original languageEnglish
Pages (from-to)1138-1143
Number of pages6
JournalBrain Stimulation
Volume8
Issue number6
DOIs
Publication statusPublished - Nov 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Inc.

Keywords

  • Emotion perception
  • Gamma
  • Neural oscillations
  • tACS
  • Transcranial alternating current stimulation

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