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Corticotropin-releasing factor injected into the lateral septum improves memory function in rats
1Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China.
The Chinese Journal of Physiology
|January 1, 1995
Summary
Corticotropin-releasing factor (CRF) in the lateral septum enhances memory retention in rats. CRF also temporarily reduces exploratory rearing, suggesting its role in memory consolidation and emotional expression.
Area of Science:
- Neuroscience
- Behavioral Neuroscience
- Neuroendocrinology
Background:
- The lateral septum is implicated in emotional regulation and memory.
- Corticotropin-releasing factor (CRF) is a key neuropeptide in stress and emotional responses.
Purpose of the Study:
- To investigate the role of CRF in the lateral septum on memory processes.
- To examine CRF's effect on the rearing response, an indicator of exploratory behavior.
Main Methods:
- Rats received bilateral cannulation in the lateral septum.
- CRF was administered into the lateral septum post-training for an inhibitory avoidance task.
- Memory retention and rearing behavior were assessed at different time points.
Main Results:
- Moderate doses of CRF significantly enhanced memory retention.
- CRF injection led to a transient decrease in the rearing response.
- The effect on rearing was not observed 24 hours post-injection.
Conclusions:
- The lateral septum plays a role in memory and emotional expression.
- CRF in the lateral septum facilitates memory consolidation and inhibits exploration in rats.