Biomaterial Database

[Description of conditioned reflex elaboration in cats in response to electric stimulation of the hippocampal formation]. 1981

B A Fomin

In six cats with chronically implanted brain electrodes conditioned running to the feeding trough was elaborated in response to electrical stimulation of the ventral hippocampal formation (VHF), which at first produced inhibition of running. The stages of conditioning were as follows: 1) inhibition of conditioned activity; 2) replacement of inhibition by more frequent runnings--generalization of the conditioned reflex; 3) enhancement of signal significance of VHF electrical stimulation and subsequent decrease of intersignal reactions. Conditioned reflex to electrical stimulation of CA1 field was elaborated slower than that to electrical stimulation of other VHF points. At the beginning of conditioning a periodic decrease of probability of conditioned reactions manifestation was observed, which is estimated as an additional characteristic of the hippocampus activity.

UI	MeSH Term	Description	Entries
D007266	Inhibition, Psychological	The interference with or prevention of a behavioral or verbal response even though the stimulus for that response is present; in psychoanalysis the unconscious restraining of an instinctual process.	Inhibition (Psychology),Inhibition, Psychology,Psychological Inhibition,Inhibitions (Psychology),Inhibitions, Psychological,Inhibitions, Psychology,Psychological Inhibitions,Psychology Inhibition,Psychology Inhibitions
D008568	Memory	Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.
D001931	Brain Mapping	Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.	Brain Electrical Activity Mapping,Functional Cerebral Localization,Topographic Brain Mapping,Brain Mapping, Topographic,Functional Cerebral Localizations,Mapping, Brain,Mapping, Topographic Brain
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D003214	Conditioning, Classical	Learning that takes place when a conditioned stimulus is paired with an unconditioned stimulus.	Reflex, Conditioned,Classical Conditioning,Classical Conditionings,Conditioned Reflex,Conditionings, Classical
D003463	Cues	Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.	Cue
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D005108	Extinction, Psychological	The procedure of presenting the conditioned stimulus without REINFORCEMENT to an organism previously conditioned. It refers also to the diminution of a conditioned response resulting from this procedure.	Psychological Extinction,Extinction (Psychology),Extinctions (Psychology),Extinctions, Psychological,Psychological Extinctions
D005502	Food	Substances taken in by the body to provide nourishment.	Foods
D005793	Generalization, Psychological	The phenomenon of an organism's responding to all situations similar to one in which it has been conditioned.	Generalization (Psychology),Generalization, Psychology,Generalizations (Psychology),Generalizations, Psychological,Generalizations, Psychology,Psychological Generalization,Psychological Generalizations,Psychology Generalization,Psychology Generalizations