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Altered self-recognition in patients with schizophrenia.

Karl Erik Sandsten1, Julie Nordgaard2, Troels Wesenberg Kjaer3

  • 1Early Psychosis Intervention Center, Region Zealand Psychiatry, Roskilde, Denmark.

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|February 3, 2020
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Summary

Patients with schizophrenia show altered self-recognition, particularly in distinguishing their mirror image. Multisensory stimulation impacts their self-other discrimination differently than in healthy individuals.

Keywords:
Body-illusionsEnfacement illusionMultisensory integrationNeurophenomenologySchizophrenia

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Self-alienation is a key symptom in schizophrenia, often manifesting as difficulty recognizing oneself.
  • Mirror self-recognition and self-other discrimination are crucial for self-awareness.

Purpose of the Study:

  • To investigate specular self-other discrimination in schizophrenia using the Enfacement Illusion.
  • To examine the impact of visuo-tactile stimulation on self-recognition in schizophrenia patients.

Main Methods:

  • Employed the multisensory Enfacement Illusion paradigm.
  • Recruited 35 schizophrenia patients and 35 healthy controls.
  • Assessed self-other discrimination and self-recognition under synchronous and asynchronous visuo-tactile stimulation.

Main Results:

  • Schizophrenia patients exhibited significantly skewed self-other discrimination towards 'other' at baseline.
  • Visuo-tactile stimulation significantly altered self-recognition in schizophrenia patients after both synchronous and asynchronous conditions.
  • Healthy controls showed altered self-recognition only after synchronous stimulation.

Conclusions:

  • Patients with schizophrenia demonstrate distinct deviations in specular self-recognition compared to healthy individuals.
  • Temporal processing in multisensory integration may underlie altered self-related stimuli processing in schizophrenia.