Authors: A A Cherninskii N G Piskorskaya I G Zima S A Krizhanovskii N Ye Makarchouk
Publish Date: 2010/06/29
Volume: 42, Issue: 1, Pages: 63-69
Abstract
We studied changes in human EEGs related to presentation of olfactory stimuli smells of essential oils and dependence of such rearrangements on the level of extroversion/introversion typical of the tested subject It was shown that this feature of personality noticeably influences the pattern of odorantinduced changes in EEG Persons with a predominance of introversion were characterized by higher levels of nonspecific activation of the brain related to perception of olfactory stimuli which was manifested in a decrease in the power of lowfrequency EEG components in the parietal occipital and temporal cerebral cortices The pattern of the rise in coherence level of highfrequency spectrum range oscillations directed toward caudal leads is considered a manifestation of intensification of the intrinsic associative processes In individuals with a predominance of extroversion we observed on the whole smaller levels of nonspecific cerebral activation upon the action of olfactory stimulation The frontoparietal pattern of spatial EEG synchronization is indicative of the development of sensoryanalytical processes related to perception of external information In general our data agree with the interpretation of such a psychological parameter as extroversion/introversion
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