[Electrophysiological study of the choice motivation in man].

In 70 Ss EEG coherence, amplitude and frequency characteristics as well as formal-dynamic (temperamental) properties were compared with the two dimensions of motivation involved in the choice of profession--its subjective "value" and the probability of its achievement ("accessability"). It was shown that the persons orienting themselves to the subjective value of the future profession tend to possess those features of temperament that testify to the stronger, more mobile and more labile nervous system as distinct from the subjects orienting themselves to the higher level of accessability. It was also shown that the persons with a higher level of the subjective value had a much higher level of EEG cortical activation in both hemispheres of the brain. The subjects with higher magnitudes of "accessability" were characterized by a lower level of brain activation.