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Memory for temporal order in patients with schizophrenia.

B Elvevåg1, M F Egan, T E Goldberg

  • 1Clinical Brain Disorders Branch, National Institutes of Mental Health/National Institute of Health, Bethesda, MD 20892, USA. elevaab@intra.nimh.nih.gov

Schizophrenia Research
|December 20, 2000
PubMed
Summary

Schizophrenia patients show impaired memory for the order of events. This temporal memory deficit is linked to poorer recall ability, suggesting a shared underlying cause for both memory issues.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Memory for temporal order can be impaired independently of other memory types.
  • Patients with Korsakoff's syndrome exhibit poorer temporal-order memory.
  • Schizophrenia is associated with various memory deficits, but temporal order memory is less studied.

Purpose of the Study:

  • To investigate memory for temporal order in individuals with schizophrenia.
  • To compare temporal memory performance between schizophrenia patients and control subjects.
  • To determine the relationship between temporal order memory and item-specific memory in schizophrenia.

Main Methods:

  • Subjects were presented with word lists at different times.
  • Participants reproduced the order of words from a random array.

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  • Recall and recognition of word items were also assessed.

    • Main Results:

    • Schizophrenia patients demonstrated significant impairment in temporal order memory.
    • Both recall and recognition of word items were poorer in patients with schizophrenia.
    • When controlling for recall, group differences in temporal memory disappeared, but not when controlling for recognition.

    Conclusions:

    • Memory for temporal order is compromised in schizophrenia.
    • This temporal memory deficit is strongly correlated with impaired recall ability.
    • A common underlying process may contribute to both temporal order and recall impairments in schizophrenia.