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R Ia Atnagulov

Publications and source records attributed to R Ia Atnagulov.

10 recordsLinked to original sources
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[The role of trace excitatory processes in the formation of conditioned reflexes to time].

I. P. Pavlov's hypothesis on the role of trace excitation in conditioning to time was verified by mathematical methods proceeding from experimental data on elaborating in rabbits a motor alimentary conditioned reflex to a four-minute interval of time. A connection has been established between the experimental characteristics of formation of a reflex to time and some parameters of the presumed dynamics of trace excitation. The analysis helped to establish the shortest and longest intervals to which a reflex to time can be elaborated by the mechanism of trace reflex, as well as the optimal interval to which it is elaborated more easily. The experimental results so obtained are a significant corroboration to the correctness of the Pavlov hypothesis.

Animals↗
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[Limits to formation of trace conditioned reflexes to time].

Conditioned reflexes to different time intervals (from 0.25 to 90 min) were elaborated in Wistar line rats by motor food-procuring method. A conditioned reflex to time is formed easier and attains highest precision to intervals from 1 to 4 min. With shorter (0.5 to 0.75 min) and longer (6 to 10 min) intervals, the reflex to time is unstable and not precise. To intervals beyond the 0.5 to 10 min range the conditioned reflex to time could not be formed by the above method. Experimental data are corroborated by theoretical estimations of the shortest and longest intervals to which it is possible to elaborate a conditioned reflex to time by trace reflex mechanism. The data obtained are considered as a confirmation of Pavlov's hypothesis on the physiological mechanisms of the process of formation of a short-interval conditioned reflex to time.

Animals↗
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[Conditioned reflexes to the ratio of time intervals].

Conditioned reflexes to relation of temporal intervals, as a specific variety of reflexes to stimuli ratios, were studied in rats during alternation of two homogeneous trace stimuli with their separate reinforcement; the stimuli were addressed to one analyser, but were of different duration. Formation of conditioned reflexes to the ratio of temporal intervals began in rats after eleven sessions (106 pairings) on the average. The total duration of the whole process of formation up to stabilization of the reflex varied from 20 to 40 sessions (31 on the average), or from 200 to 394 pairings (308 on the average). The process of formation was the longer the less the ratio between the compared intervals (of a longer to a shorter one). The precision of the formed conditioned reflex to the ratio of temporal intervals (as expressed in the probability of correct reactions) amounted to 0.71% on the average. The experimental data may be satisfactorily explained in the light of concepts of Pavlovian school on the physiological mechanism of conditioned reflexes to stimuli ratios.

Animals↗
PubMedDate not supplied

[Conditioned reflexes in relation to temporal intervals].

The paper outlines the results of experiments on twelve rats aimed at studying conditioned reflexes of discrimination of both absolute and relative characteristics of time intervals (30 and 180; 10 and 90; 5 and 45; 5 and 40; 5 and 35; 5 and 30 sec). The data obtained are discussed in the light of I.P. Pavlov's hypothesis regarding the physiological mechanism of conditioning to time.

Animals↗