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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)
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)
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)
In healthy subjects and patients with chronic alcoholism, the ability to construct in mind geometric figures in conditions of masking was studied by means of recording the number of correct decisions, the reaction time and evoked cortical electrical activity. It has been found that solution of visual-spatial task of mentally constructing geometric figures(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)