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Updated: Jun 10, 2026
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Developing a Rat Model for Bipolar Disorder
Published on: May 2, 2025
Prospective memory deficits in patients with bipolar disorder: a preliminary study
Edwin Lee1, Yu-Tao Xiang, David Man
1Department of Psychiatry, Chinese University of Hong Kong, China.
Summary
Prospective memory (PM), remembering future tasks, is impaired in bipolar disorder (BD) patients, particularly time-based tasks. Depressive symptoms and age significantly impact this cognitive deficit.
Area of Science:
- Cognitive psychology
- Neuroscience
- Psychiatry
Background:
- Prospective memory (PM) involves remembering future intentions without cues.
- PM deficits are understudied in bipolar disorder (BD).
Purpose of the Study:
- To investigate the nature and correlates of PM deficits in BD patients.
- To compare PM performance between BD patients and healthy controls.
Main Methods:
- Forty BD patients and 40 healthy controls completed assessments of PM, retrospective memory (RM), IQ, psychosocial functioning, and clinical status.
- Time-based and event-based PM tasks were administered.
Main Results:
- BD patients showed significantly poorer performance on time-based PM tasks compared to controls.
- Older age, lower education, depressive and manic symptoms, poorer psychosocial functioning, poorer RM, and lower IQ were associated with impaired time-based PM.
- Poorer RM and lower IQ were linked to impaired event-based PM in BD patients.
- Multivariate analyses identified depression severity and older age as key predictors of impaired time-based PM, and RM for event-based PM.
Conclusions:
- Time-based prospective memory is significantly impaired in individuals with bipolar disorder.
- Depressive symptoms, age, and retrospective memory are significant determinants of prospective memory impairments in BD.
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