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The relationship between semantic organization and memory in obsessive-compulsive disorder
T Deckersbach1, M W Otto, C R Savage
1Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114-3139, USA.
Psychotherapy and Psychosomatics
|February 15, 2000
Summary
Obsessive-compulsive disorder (OCD) patients show significant verbal and nonverbal memory impairments. These deficits are linked to difficulties with organizational strategies during memory encoding, supporting frontostriatal dysfunction models.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychiatry
Background:
- Evidence suggests frontostriatal dysfunction in obsessive-compulsive disorder (OCD).
- Neuroimaging and neuropsychological studies support this link.
- Previous research noted nonverbal memory deficits in OCD, with verbal memory less affected.
Purpose of the Study:
- To examine verbal and nonverbal memory in untreated OCD outpatients.
- To evaluate the impact of encoding strategies on memory performance in OCD.
- To investigate the role of frontostriatal system functioning in OCD memory deficits.
Main Methods:
- Assessed verbal and nonverbal memory in 17 untreated OCD outpatients.
- Evaluated the effects of encoding strategies on memory recall.
- Correlated memory performance with strategy use.
Main Results:
- OCD patients exhibited significant impairments in both verbal and nonverbal memory.
- Memory deficits correlated with reduced use of organizational and semantic clustering strategies.
- Impaired strategy use was observed during the encoding phase.
Conclusions:
- Organizational strategy deficits in OCD are consistent with frontostriatal dysfunction.
- Frontostriatal dysfunction may underlie memory impairments in OCD.
- Encoding strategy deficits offer a potential mechanism for OCD-related memory problems.