Cortical Evoked Potentials and Extraversion

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Stimulus intensity modulation was studied in extraverts and introverts. Auditory evoked potentials were recorded in 29 subjects and visual evoked potentials in 55. In both sensory modalities, extraverts showed considerably larger amplitudes of the late components of the evoked potentials, suggesting that they were more “open” to stimuli than introverts. In this way, extraverts' responses to simple stimuli could be seen as similar to their interchange with the complex stimuli of the social world.

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