O A Genkina

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Dynamics was studied of the extinction of temporary connection, elaborated by means of motivationally significant word, in patients with chronic alcoholism. Two series of studies were conducted. In the first one the reinforcing stimulus was not recognized by the subject and was perceived as a dull light flash on the screen. In the second one the word was(More)
20 patients suffering from chronic alcoholism and 10 healthy, righthanded persons with normal sight were examined. Alcoholics were trained to elaborate a temporary connection by means of unrecognized significant word "vodka" related to their dominant motivation. The amplitude of the late positive response P300 was greater and its latency was shorter(More)
The ability of mental construction of easily verbalized geometric figures was studied in 20 healthy subjects by means of recording of the evoked potentials of the cerebral cortex. Fragments of geometric figures were presented with the intervals of 80 and 500 ms. To one half of the subjects the stimuli were presented unilaterally (both fragments to one and(More)
By means of backward masking, the time of perception of letter stimuli presented to the left and right visual fields, was determined in practically healthy persons who were given different doses of alcohol, and in patients with chronic alcoholism. Evoked electrical activity to the same stimuli was recorded in identical conditions. A small dose of alcohol(More)
The dynamics of the cortical evoked activity in the process of learning of time microintervals (10, 60 and 180 ms) discrimination was studied in healthy adults. Feedback stimulus visually informing of the real correlations of the differentiated pauses facilitates the discrimination. The factor of the visual field does not affect the estimation of brief time(More)
Recognition of short time intervals (10, 60, and 180 ms) between visual stimuli presented to the left or right hemisphere was studied in adult healthy people. The interval of 180 ms is recognized better than that of 10 or 60 ms. Learning with repeated tests with 180 ms intervals proceeds better than that with short intervals. The predominance of the left(More)