Plasticity in unimodal and multimodal brain areas reflects multisensory changes in self-face identification

Research output: Contribution to journalArticlepeer-review

Authors

  • Matthew Apps
  • Ana Tajadura-Jiménez
  • Marty Sereno
  • Olaf Blanke
  • Manos Tsakiris

Colleges, School and Institutes

External organisations

  • University College London Hospitals NHS Foundation Trust
  • Kingston University and St George's, University of London
  • Center for Neuroprosthetics and Brain-Mind Institute

Abstract

Nothing provides as strong a sense of self as seeing one's face. Nevertheless, it remains unknown how the brain processes the sense of self during the multisensory experience of looking at one's face in a mirror. Synchronized visuo-tactile stimulation on one's own and another's face, an experience that is akin to looking in the mirror but seeing another's face, causes the illusory experience of ownership over the other person's face and changes in self-recognition. Here, we investigate the neural correlates of this enfacement illusion using fMRI. We examine activity in the human brain as participants experience tactile stimulation delivered to their face, while observing either temporally synchronous or asynchronous tactile stimulation delivered to another's face on either a specularly congruent or incongruent location. Activity in the multisensory right temporo-parietal junction, intraparietal sulcus, and the unimodal inferior occipital gyrus showed an interaction between the synchronicity and the congruency of the stimulation and varied with the self-reported strength of the illusory experience, which was recorded after each stimulation block. Our results highlight the important interplay between unimodal and multimodal information processing for self-face recognition, and elucidate the neurobiological basis for the plasticity required for identifying with our continuously changing visual appearance.

Bibliographic note

© The Author 2013. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

Details

Original languageEnglish
Pages (from-to)46-55
Number of pages10
JournalCerebral Cortex
Volume25
Issue number1
Early online date20 Aug 2013
Publication statusPublished - Jan 2015

Keywords

  • Adult, Brain/physiology, Brain Mapping, Face, Female, Humans, Illusions/physiology, Magnetic Resonance Imaging, Neuronal Plasticity, Physical Stimulation, Recognition, Psychology/physiology, Self Concept, Touch Perception/physiology, Visual Perception/physiology, Young Adult, enfacement, face recognition, fMRI, multisensory, self-recognition