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Updated: Aug 18, 2026

Developing a Rat Model for Bipolar Disorder
Published on: May 2, 2025
Memory and learning in pediatric bipolar disorder
Erin B McClure1, Julia E Treland, Joseph Snow
1Mood and Anxiety Disorders Program, National Institute of Mental Health, Bethesda, MD 20892-2670, USA. erin.mcclure@nih.gov
Insights
Pediatric bipolar disorder (PBPD) is linked to significant memory impairments, particularly in verbal learning and facial recognition. These findings in children mirror adult BPD memory deficits, suggesting a continuous condition.
Area of Science:
- Neuroscience
- Psychiatry
- Developmental Psychology
Background:
- Pediatric bipolar disorder (PBPD) is a complex condition with potential cognitive implications.
- Memory functioning is a critical area of cognitive assessment in child and adolescent mental health.
Purpose of the Study:
- To investigate memory functioning in pediatric bipolar disorder (PBPD) compared to healthy controls.
- To determine if PBPD is associated with specific deficits in verbal and visuospatial memory.
Main Methods:
- Administered a comprehensive battery of verbal and visuospatial memory tests.
- Compared 35 outpatients with PBPD to 20 age-, gender-, and IQ-matched healthy controls.
Main Results:
- Patients with PBPD exhibited poorer performance on verbal learning/memory tasks compared to controls.
- Impaired delayed facial recognition memory was observed in the PBPD group.
- Memory deficits were more pronounced in PBPD patients with comorbid attention-deficit/hyperactivity disorder or acute mood symptoms.
Conclusions:
- Verbal learning/memory deficits and some visuospatial memory impairments characterize narrow phenotype PBPD.
- Further research is required to understand the influence of comorbidities and mood state on these memory deficits.
- The continuity of memory dysfunction from childhood to adulthood in BPD warrants investigation into underlying neural mechanisms.
Objective:
To test the hypothesis that patients with pediatric bipolar disorder (PBPD) would demonstrate impairment relative to diagnosis-free controls of comparable age, gender, and IQ on measures of memory functioning.
Method:
The authors administered a battery of verbal and visuospatial memory tests to 35 outpatients with PBPD and 20 healthy controls who participated as volunteers in this study. Groups did not differ on age, gender, or IQ.
Results:
Consistent with findings in adults with BPD, patients with PBPD performed more poorly than controls on measures of verbal learning/memory and delayed facial recognition memory. Impaired memory was particularly evident in patients with comorbid PBPD/attention-deficit/hyperactivity disorder or acute mood symptoms.
Conclusions:
These findings suggest that deficits in verbal learning and memory, as well as some aspects of visuospatial memory, characterize patients with narrow phenotype PBPD. Further research is needed, however, to clarify the roles of comorbid attention-deficit/hyperactivity disorder and acute mood state in the emergence of these deficits. Given the apparent continuity in memory dysfunction between adult BPD and narrow phenotype PBPD, research aimed at elucidating underlying neural mechanisms for this set of deficits is warranted.
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