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Two-way shuttlebox avoidance conditioning in three DAB rat stocks
S Sakhi1, A L Trzcinski, E Tobach
1Department of Mammalogy, American Museum of Natural History, New York, NY 10024-5192.
Physiology & Behavior
|January 1, 1988
Summary
FH rat females with serotonin deficiency showed altered avoidance learning and increased activity compared to Long-Evans and Wistar rats. Sex differences in serotonin levels may influence these behaviors.
Area of Science:
- Neuroscience
- Behavioral Science
- Animal Models
Background:
- FH rats exhibit peripheral serotonin deficiency.
- Long-Evans (LE) and Wistar (W) rats are presumed ancestors of FH rats.
- Understanding serotonin's role in behavior requires comparative studies.
Purpose of the Study:
- To compare avoidance conditioning and activity in FH rats versus LE and W rats.
- To investigate the influence of serotonin deficiency on behavior.
- To explore potential sex differences in FH rat neurobiology.
Main Methods:
- Utilized a two-way shuttlebox to assess behavioral responses.
- Measured escapes, conditional avoidance response (CAR), and locomotion.
- Compared behavioral data across three rat stocks (FH, LE, W) and sexes.
Main Results:
- FH females demonstrated fewer escapes and more CARs than LE and W females.
- FH females exhibited significantly higher activity levels than both LE and W females.
- No statistically significant behavioral differences were observed among males of the three stocks.
Conclusions:
- Peripheral serotonin deficiency in FH rats is associated with altered avoidance learning and increased activity, particularly in females.
- Central nervous system (CNS) serotonin deficiency may underlie these behavioral differences.
- Investigating CNS serotonin levels in FH rats necessitates consideration of sex-based variations.