title: Fear-dependent variations in continuous avoidance behavior of pigs. I. Lack of effect of diazepam on performance of discriminative fear conditioning.
abstract: Pigs trained to avoid shocks by crossing a barrier in a shuttle-box according to a continuous avoidance procedure were submitted to a Pavlovian discriminative fear-conditioning procedure in which a tone was always followed by unavoidable shock (CS+) and another tone never followed by shock (CS-). The presentation of the CS+ on a test session in the shuttle-box induced an increase of the response rate while the CS- decreased the performance. Diazepam (1 mg/kg) administered before the test session did not modify the changes in avoidance response to each CS.
mesh_terms: D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D003214:Conditioning, Classical / Q000187:drug effects*; D003975:Diazepam / Q000494:pharmacology*; D005239:Fear / Q000187:drug effects*; D005260:Female; D008297:Male; D013552:Swine
chemical_list: D003975:Diazepam