DIRECTED ATTENTION INFLUENCE ON HUMAN BRAIN POTENTIALS DURING PROBABILITY VISUAL STIMULATIONстатья
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Дата последнего поиска статьи во внешних источниках: 16 февраля 2016 г.
Аннотация:On 12 right-handed healthy subjects saccadic latency and averaged EEG=potentials connected with switching on of the set and cue visual stimuli were examined in M. Posner’s “cost=benefit” experimental paradigm. It was shown, that attention reflects on the P100 positive potential’s parameters on the set and cue stimulus switching on and on the P300 and slow positive wave PMP1 on the set stimulus switching on in the relevant conditions. Probably those space=temporal characteristics of the P100 potential reflect including of the frontal=parietal network of space attention in to the relevant stimulus perception. Potentials P300 and PMP1 dominated in the right parietal cortex area. This suggests that those potentials reflect processes of space attention and fixation. The late positive potentials in 600 -900 ms interval after the set stimulus switched on were found. Those potentials amplitude was wider in backward averaging and theirs focuses dominated in the left frontal cortex area. These findings suggest, that late potentials reflect the anticipation and motor attention processes.
Key words: saccadа, attention, evoked potentials, EEG-mapping