PubMed · 1168455
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P Harmatz, R C Boelkins, S Kessler. 1975. Postisolation aggression and olfactory cues.. https://doi.org/10.1016/s0091-6773(75)91937-9
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The lateralized effects of ethanol (ETOH) upon behavior and monoamine biochemistry in the lizard, Anolis carolinensis, were examined. Eight adult male anoles consumed solutions of 19% ethanol (ETOH) twice daily over the course of 18 days, while controls consumed water. ETOH decreased the use of the left eye/right hemisphere, but not the right eye/left hemisphere, during territorial aggression (p<0.05). During crossover (i.e., ETOH to water and vice versa) this effect was reversible and replicable. Biochemically, an asymmetry was observed in 5-HT levels in the raphe both in ETOH and controls. ETOH increased levels of serotonin (5-HT; p<0.05), and 5-HIAA/5-HT ratios (p<0.05) in the raphe; serotonin levels in several brain regions correlated with aggressive responses. These results suggest that ETOH boosts 5-HT levels in animals subchronically exposed to ETOH. They further suggest that asymmetry in endogenous 5-HT systems may account for the asymmetrical regulation of aggression generally, and may explain the behavioral effects of ETOH upon lateralized aggression.
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