Impaired spatial-temporal integration of touch in xenomelia (body integrity identity disorder)

Atsushi Aoyama, Peter Krummenacher, Antonella Palla, Leonie Maria Hilti, Peter Brugger

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Body integrity identity disorder (BIID), or xenomelia, is a failure to integrate a fully functional limb into a coherent body schema. It manifests as the desire for amputation of the particular limb below an individually stable 'demarcation line.' Here we show, in five individuals with xenomelia, defective temporal order judgments to two tactile stimuli, one proximal, the other distal of the demarcation line. Spatio-temporal integration, known to be mediated by the parietal lobes, was biased towards the undesired body part, apparently capturing the individual's attention in a pathologically exaggerated way. This finding supports the view of xenomelia as a parietal lobe syndrome.

Original languageEnglish
Pages (from-to)96-110
Number of pages15
JournalSpatial Cognition and Computation
Issue number2-3
Publication statusPublished - 2012 Apr


  • body schema
  • neuropsychiatry
  • spatio-temporal integration
  • tactile attention

ASJC Scopus subject areas

  • Modelling and Simulation
  • Experimental and Cognitive Psychology
  • Computer Vision and Pattern Recognition
  • Earth-Surface Processes
  • Computer Graphics and Computer-Aided Design


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