The role of gamma band oscillations and synchrony on rubber hand illusion and crossmodal integration

Noriaki Kanayama*, Atsushi Sato, Hideki Ohira

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

The rubber hand illusion represents an illusory experience during the mislocalization of own hand when correlated visuotactile stimuli are presented to the actual and fake hands. The visuotactile integration process appears to cause this illusion; the corresponding brain activity was revealed in many studies. In this study, we investigated the effect of the rubber hand illusion on the crossmodal integration process by measuring EEG. The participants who experienced less intensive illusion showed greater congruency effect on reaction time (RT), greater power increase at the parietal zero electrode (Pz) and smaller interelectrode synchrony of the gamma band activity. On the other hand, the participants who experienced more intense illusion showed greater interelectrode synchrony. The results suggested that the gamma band activity in the parietal area reflects the visuotactile integration process and that its synchrony causes the illusory intensity. Crown

Original languageEnglish
Pages (from-to)19-29
Number of pages11
JournalBrain and Cognition
Volume69
Issue number1
DOIs
StatePublished - 2009/02

Keywords

  • Depersonalization
  • Gamma band activity
  • Interelectrode synchrony
  • Rubber hand illusion
  • Time-frequency analysis
  • Visuotactile integration

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience

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