Rubber hand illusion highlights massive visual capture and sensorimotor face-hand remapping in a tetraplegic man

Emmanuele Tidoni, Luigi Grisoni, Marco Tullio Liuzza, Salvatore Maria Aglioti

Research output: Contribution to journalArticle

Abstract

Purpose: The illusory ownership of a fake hand as part the body follows synchronous tactile stimulation over a visible rubber hand and a covered hand. Whether brain plasticity mechanisms after sensory and motor disconnection modulates this illusion remain unexplored. Methods: We tested a tetraplegic man after synchronous and asynchronous stimulation of the hand and face. Results: The illusory ownership of the fake hand was tested four times in separate days and always reported. To verify whether this ownership feeling generalized also to object not resembling the human body we tested this illusion with a plastic bottle and a rubber hand. The illusionary perception of owning an external object using the rubber hand paradigm showed that the temporally matched tactile stimulation on a fake hand and visual capture mechanism create the illusionary feeling that the rubber hand was part of his body. Conclusions: Despite lesions that dramatically disconnect the access to sensory inputs and motor outputs our data suggests a strong visual capture of a rubber hand and a possible remapping of hand-face representations after the spinal lesion. We suggest that vision and brain plasticity may represent a supportive tool for motor rehabilitation in patients with sensory deficits.

Original languageEnglish
Pages (from-to)611-622
Number of pages12
JournalRestorative Neurology and Neuroscience
Volume32
Issue number5
DOIs
Publication statusPublished - 2014

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Rubber
Hand
Ownership
Human Body
Touch
Emotions
Brain
Plastics
Rehabilitation

Keywords

  • brain plasticity
  • face hand remapping
  • Rubber hand illusion
  • spinal cord injury
  • visual dominance

ASJC Scopus subject areas

  • Neurology
  • Developmental Neuroscience
  • Clinical Neurology
  • Medicine(all)

Cite this

Rubber hand illusion highlights massive visual capture and sensorimotor face-hand remapping in a tetraplegic man. / Tidoni, Emmanuele; Grisoni, Luigi; Liuzza, Marco Tullio; Aglioti, Salvatore Maria.

In: Restorative Neurology and Neuroscience, Vol. 32, No. 5, 2014, p. 611-622.

Research output: Contribution to journalArticle

Tidoni, Emmanuele ; Grisoni, Luigi ; Liuzza, Marco Tullio ; Aglioti, Salvatore Maria. / Rubber hand illusion highlights massive visual capture and sensorimotor face-hand remapping in a tetraplegic man. In: Restorative Neurology and Neuroscience. 2014 ; Vol. 32, No. 5. pp. 611-622.
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