[Late consequences of an early stimulation of the lateral hypothalamus on the acquisition and extinction of alimentary conditioning].
Male Sprague Dawley rats received at 13 days of age bilaterally implanted electrodes in lateral hypothalamus. At 15th and 16th days of age they underwent a total of 4 hrs imposed stimulation, according to a self-stimulation model of a 15 days animal. Electrodes were removed on the 17th day. Between the 42nd and 46th days, animals were tested in a skinnerian, alimentary reinforced task. In acquisition as well as in extinction behavior, early stimulated animals performed better than animals of the same age, implanted but non stimulated or non implanted.
D000818:Animals; D001835:Body Weight; D003216:Conditioning, Operant / Q000502:physiology; D004567:Electrodes, Implanted; D005108:Extinction, Psychological; D005247:Feeding Behavior; D007031:Hypothalamus / Q000502:physiology*; D008297:Male; D051381:Rats
Conséquences tardives d'une stimulation précoce de l'hypothalamus latéral sur l'acquisition et l'extinction d'un conditionnement alimentaire