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Emotional prosodic processing in auditory hallucinations.

T L Shea1, A A Sergejew, D Burnham

  • 1Centre for Neuroscience, University of Melbourne, Parkville Vic 3052, Australia. t.shea@pgrad.unimelb.edu.au

Schizophrenia Research
|November 17, 2006
PubMed
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Patients with schizophrenia experiencing auditory hallucinations show significant deficits in emotional prosodic processing. This suggests prosodic dysfunction may contribute to auditory hallucinations in psychosis.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Deficits in emotional prosodic processing are common in schizophrenia.
  • Prosodic cues are vital for voice and speaker identity memory.
  • Cutting's hypothesis links prosodic deficits to auditory hallucination misattribution.

Purpose of the Study:

  • To compare emotional prosodic processing in hallucinating schizophrenia patients, non-hallucinating patients, and healthy controls.
  • To test the hypothesis that hallucinating patients exhibit greater prosodic deficits.

Main Methods:

  • A cohort of 67 schizophrenia/schizoaffective patients (38 hallucinating, 29 non-hallucinating) and 31 controls participated.
  • Participants completed an emotional prosodic processing task using neutral sentences with happy, sad, and neutral vocal tones.

Related Experiment Videos

  • Ratings were made on a 7-point Likert scale for perceived emotion.

    • Main Results:

    • Hallucinating schizophrenia patients demonstrated significant deficits in prosodic processing compared to non-hallucinating patients and controls.
    • No significant differences were found between non-hallucinating patients and controls.
    • Hallucinating patients were less adept at recognizing and utilizing prosodic cues.

    Conclusions:

    • Results support Cutting's hypothesis that prosodic dysfunction may underlie auditory hallucinations.
    • Emotional prosodic processing deficits are specifically linked to the experience of auditory hallucinations in schizophrenia.
    • Impaired prosodic cue processing may contribute to the misattribution phenomena in psychosis.