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Abstract
The current study was designed to investigate whether ethanol shares stimulus properties with acetaldehyde with the use of a discriminative taste aversion procedure. Animals were trained to discriminate a dose of acetaldehyde (0.2 or 0.3 g/kg, i.p.) from saline in eight consecutive cycles consisting of a pairing day (PD) and three nonpairing days (NPDs). On PDs, all animals were injected with a particular dose of acetaldehyde 30 min before a 20-min limited access to a saccharin solution [0.1% (wt./vol.)] and then injected immediately with either LiCl (0.15 M, 1.8 mEq) or saline. On the three following NPDs, animals were injected with saline and 30 min later were presented with the same saccharin solution for 20 min. All animals in each acetaldehyde training dose group acquired discriminative stimulus control before generalization tests were conducted. Results of generalization tests (ethanol doses of 0.8, 1.2, 1.6, and 2.0 g/kg) revealed that ethanol substituted for acetaldehyde at doses of 1.2 and 1.6 g/kg for both training doses of acetaldehyde. The findings for this study indicate that acetaldehyde and ethanol may share some stimulus properties.
Published Version
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