Touch feel illusion in schizophrenic patients

Avi Peled*, Michael Ritsner, Shmuel Hirschmann, Amir B. Geva, Ilan Modai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

146 Scopus citations

Abstract

Background: The rubber hand illusion is a tactile sensation referred to as an alien limb. The illusion has been explained by a spurious reconciliation of visual and tactile inputs reflecting functional connectivity in the brain and was used to explore alterations of functional connectivity in schizophrenia. Methods: The rubber hand illusion was achieved when two paintbrushes simultaneously stroke the hand of the subject hidden from vision by a screen, as well as an artificial hand placed in view of the subject. The rubber hand illusion was assessed with a questionnaire affirming or denying the occurrence of the illusion. Results: Schizophrenic subjects felt the illusion stronger and faster then did normal control subjects. Some rubber hand illusion effects correlated with positive symptoms of schizophrenia but not with negative symptoms. Conclusions: Altered functional integration of environmental inputs could constitute the basis for erroneous interpretations of reality, such as delusions and hallucinations. (C) Society of Biological Psychiatry.

Original languageEnglish
Pages (from-to)1105-1108
Number of pages4
JournalBiological Psychiatry
Volume48
Issue number11
DOIs
StatePublished - 1 Dec 2000
Externally publishedYes

Keywords

  • Context
  • Functional connectivity
  • Rubber hand
  • Schizophrenia

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