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Word and tone working memory deficits in schizophrenia
B E Wexler1, A A Stevens, A A Bowers
1Department of Psychiatry, Yale University School of Medicine, New Haven, Conn, USA. bruce.wexler@yale.edu
Archives of General Psychiatry
|December 23, 1998
Summary
Patients with schizophrenia show verbal memory deficits. Some have selective verbal memory issues, while others exhibit broader cognitive impairments affecting information processing.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychiatry
Background:
- Verbal memory deficits are frequently observed in schizophrenia.
- The specificity of these deficits requires further investigation.
- Auditory memory in schizophrenia has not been extensively studied.
Purpose of the Study:
- To assess the specificity of verbal memory deficits in schizophrenia.
- To compare verbal and nonverbal auditory memory performance.
- To identify subgroups of patients with distinct cognitive profiles.
Main Methods:
- Compared 38 outpatients with schizophrenia to 39 healthy controls.
- Utilized verbal and nonverbal auditory memory tests, including serial position tasks.
- Stratified schizophrenia patients based on performance in pitch discrimination and sustained attention screening.
Main Results:
- Schizophrenia patients with normal screening performance showed deficits in verbal memory but not nonverbal memory.
- Control subjects found nonverbal tests more challenging than verbal tests.
- Patients with poor screening performance exhibited deficits across all memory tests.
Conclusions:
- Identified a subgroup of schizophrenia patients with selective verbal memory deficits.
- Highlighted that some schizophrenia patients experience broader cognitive impairments.
- Suggested that cognitive deficits in schizophrenia may stem from early information processing failures.