Related Experiment Video
Updated: Aug 18, 2026

Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
Published on: May 4, 2011
Extraversion and cortical activation during memory performance
A Fink1, R H Grabner, C Neuper
1Institute of Psychology, University of Graz, Universitaetsplatz 2/III, A-8010 Graz, Austria. andreas.fink@uni-graz.at
Abstract:
In this study we analyzed the influence of the personality dimension extraversion-introversion (E) on the level and topographical distribution of cortical activation. In 62 participants (32 introverts and 30 extraverts), we measured the extent of Event-Related Desynchronization (ERD) in the EEG during performance of a short-term memory (i.e., temporary maintenance of information) and a more complex working memory task (i.e., temporary maintenance and active manipulation of information). The results indicate that during performance of both tasks, introverts display a larger amount of ERD than extraverted individuals. Moreover, the present E effects largely match previous studies as to the restriction of these effects to lower EEG frequency ranges (approx. 4-8 Hz). Topographical analyses show that the E effects are primarily present over (right-hemispheric) frontal and parietal regions of the cerebral cortex.
Related Concept Videos
Role of Cerebellum and Prefrontal Cortex in Memory
Working Memory
Higher Mental Functions of Brain: Learning and Memory
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Role of Hippocampus in Memory
Role of Amygdala in Memory
One of the...

