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Auditory sensory ("echoic") memory dysfunction in schizophrenia

R D Strous1, N Cowan, W Ritter

  • 1Department of Psychiatry, Albert Einstein College of Medicine/Bronx Psychiatric Center, NY 10461, USA.

The American Journal of Psychiatry
|October 1, 1995
PubMed
Summary
This summary is machine-generated.

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Schizophrenia impairs auditory sensory memory, affecting brain areas beyond the prefrontal cortex. This echoic memory deficit was observed even with brief delays in tone matching.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychiatry

Background:

  • Working memory deficits are a core feature of schizophrenia.
  • Previous research has primarily focused on prefrontal cortex involvement in these deficits.

Purpose of the Study:

  • To investigate auditory sensory memory (echoic memory) integrity in schizophrenia.
  • To determine if echoic memory, less dependent on prefrontal functioning, is affected in schizophrenia.

Main Methods:

  • Utilized a tone matching task with both immediate and delayed (300 msec) conditions.
  • Compared performance between 20 individuals with schizophrenia and 20 healthy controls matched for age and IQ.

Main Results:

  • Schizophrenic subjects demonstrated significant impairment in matching tones with a 300 msec delay.

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  • No significant difference was found between groups when tones were presented without delay.

    • Conclusions:

    • Working memory dysfunction in schizophrenia extends to sensory memory components.
    • These findings suggest that schizophrenia-related cognitive deficits involve brain regions beyond the prefrontal cortex.