Personality traits and its association with resting regional brain activity

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Journal Article
International Journal of Psychophysiology, 2006, 60 (3), pp. 215 - 224
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The association betweenpersonality and resting brain activity was investigated. Personality was assessed using the NEO-Five-factor Investory (NEO-FFI) and resting brain activity was indexed by eyes closed EEG spectral magni from four frequency bands over the entire cortex. Results suggest that there are differences between males and females in the NEO-FFI personality traits. The NEO-FFI traits were associated with lower frequency brain activity in both male and females. Mild significant and consistent associations were found between delta and theta activity across all cortical regions with Extraversion and Conscientiousness. There were few assocciations between personality traits and alpha and beta activity, this was shown in males only. Fewer associations between personaility and faster frequency bands such as alpha may be sue to the methodological problem of using fixed alpha bands. Multiple regression analyses showed that individual alpha frequencies had a greater contribution to personality traits than fixed alpha waves.
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