Cortical signatures of vicarious tactile experience in four-month-old infants

Silvia Rigato, Michael J Banissy, Aleksandra Romanska, Rhiannon Thomas, José van Velzen, Andrew J Bremner

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The human brain recruits similar brain regions when a state is experienced (e.g., touch, pain, actions) and when that state is passively observed in other individuals. In adults, seeing other people being touched activates similar brain areas as when we experience touch ourselves. Here we show that already by four months of age, cortical responses to tactile stimulation are modulated by visual information specifying another person being touched. We recorded somatosensory evoked potentials (SEPs) in 4-month-old infants while they were presented with brief vibrotactile stimuli to the hands. At the same time that the tactile stimuli were presented the infants observed another person's hand being touched by a soft paintbrush or approached by the paintbrush which then touched the surface next to their hand. A prominent positive peak in SEPs contralateral to the site of tactile stimulation around 130 ms after the tactile stimulus onset was of a significantly larger amplitude for the "Surface" trials than for the "Hand" trials. These findings indicate that, even at four months of age, somatosensory cortex is not only involved in the personal experience of touch but can also be vicariously recruited by seeing other people being touched.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalDevelopmental Cognitive Neuroscience
Volume35
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • Empathic sensing
  • Infancy
  • Multisensory development
  • Social perceptual development
  • Somatosensory evoked potentials
  • Tactile perception
  • Touch

ASJC Scopus subject areas

  • Cognitive Neuroscience

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