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Biological Bases of Extraversion Psychophysiological Evidence
Author(s) -
Stelmack Robert M.
Publication year - 1990
Publication title -
journal of personality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.082
H-Index - 144
eISSN - 1467-6494
pISSN - 0022-3506
DOI - 10.1111/j.1467-6494.1990.tb00917.x
Subject(s) - arousal , psychology , extraversion and introversion , psychophysiology , stimulation , reactivity (psychology) , reticular formation , sensory system , neuroscience , brainstem , reticular activating system , audiology , personality , developmental psychology , cognitive psychology , big five personality traits , social psychology , medicine , alternative medicine , pathology
There is a good deal of evidence, particularly from electrodermal and electrocortical recording procedures, that introverts exhibit greater reactivity to sensory stimulation than extraverts There is little evidence that introverts and extraverts differ in base level of arousal in neutral conditions, and there is no clear evidence that their differences in sensitivity to stimulation are determined by differences in attentional state Faster auditory brainstem evoked response latencies observed for introverts implicate differences in peripheral sensory processes that are not determined by mechanisms in the reticular system as proposed in the arousal hypothesis There is also evidence that individual differences in the expression of motor activity between introverts and extraverts involve differences in motoneuronal excitability