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The orienting response in schizophrenia and mania
1Department of Psychiatry, Mount Sinai School of Medicine, New York, NY USA.
Psychiatry Research
|January 21, 2000
Summary
Schizophrenia and bipolar disorder patients show impaired orienting responses (OR) to task-relevant sounds, indicated by reduced finger pulse amplitude. This dysfunction may overlap between these severe psychiatric conditions.
Area of Science:
- Psychophysiology
- Clinical Psychology
- Neuroscience
Background:
- Orienting response (OR) dysfunction is implicated in severe psychiatric disorders.
- Previous studies suggest differences in OR, particularly in schizophrenia.
- Understanding OR in schizophrenia and bipolar disorder is crucial for diagnosis and treatment.
Purpose of the Study:
- To investigate orienting response (OR) dysfunction in schizophrenia and manic patients compared to controls.
- To examine skin conductance (SCR) and finger pulse amplitude (PULSE) responses.
- To assess the reliability of OR measures over time.
Main Methods:
- Measured SCR and PULSE in 53 schizophrenic, 30 manic, and 28 control subjects.
- Utilized neutral and task-relevant auditory tones during two OR sessions.
- Assessed test-retest reliability over a 3-week interval.
Main Results:
- No significant differences in non-responders to neutral tones across groups.
- Lower PULSE frequency to task-relevant tones in both schizophrenic and manic patients compared to controls.
- OR to task-relevant tones showed reliability, but not to neutral tones.
Conclusions:
- Aspects of OR dysfunction may overlap between schizophrenia and bipolar disorder.
- Findings on OR non-responding to neutral tones differ from some prior research.
- The study highlights specific psychophysiological differences in severe psychiatric disorders.