title: [Relation between the dynamics of the extinction process and the initial rate of hypothalamic self-stimulation in the rabbit].
abstract: In experiments on rabbits with electrodes chronically implanted in the lateral hypothalamus, dynamics was studied of extinction of self-stimulation reaction as a result of cancellation of intracerebral reinforcement. General dynamics of extinction of the unreinforced instrumental actions and behavioural manifestations of orienting-investigating reaction were revealed. It was found, that in 30% of rabbits, the orienting reaction appearing as a result of "discordance" between expected and actual afferentation is attended by a species-specific form of behaviour, expressed in the form of hind paws synergic strokes against the floor. It is suggested that these strokes may be a somatic expression of a negative emotional state of animals during self-stimulation extinction. The comparison of extinction dynamics with the level of self-stimulation background frequency showed a relative independence of the strength of drive towards getting positive emotions on motivational effects created by electric stimulation of the reinforcing brain structures.
mesh_terms: D000818:Animals; D002682:Chinchilla; D003216:Conditioning, Operant / Q000502:physiology; D005108:Extinction, Psychological / Q000502:physiology*; D007026:Hypothalamic Area, Lateral / Q000502:physiology*; D008297:Male; D009949:Orientation / Q000502:physiology; D012653:Self Stimulation / Q000502:physiology*
vernacular_title: Dinamika protsessa ugasheniia v zavisimosti ot iskhodnoĭ chastoty gipotalamicheskoĭ samostimuliatsii u krolikov.