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Related Experiment Video

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Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

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Personality goes a long a way: an interhemispheric connectivity study.

Sylco S Hoppenbrouwers¹, Faranak Farzan, Mera S Barr

¹Department of Experimental Psychology, Utrecht University Utrecht, Netherlands.

Frontiers in Psychiatry

|March 23, 2011

Summary

This study links Agreeableness, a personality trait, to the brain's communication pathways. Enhanced brain connectivity in the prefrontal cortex is associated with higher Agreeableness in healthy individuals.

Keywords:

NEO-PI-R agreeableness electroencephalography interhemispheric connectivity transcranial magnetic stimulation

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Area of Science:

Neuroscience
Psychology
Cognitive Science

Background:

Personality delineation is central to psychology.
The Five Factor Model (NEO-FFI) measures key personality traits.
Interhemispheric connectivity is linked to behavior and psychiatric disorders.

Purpose of the Study:

To investigate the association between personality traits and frontal interhemispheric connectivity.
To explore the relationship between the NEO-FFI personality traits and brain function.
To utilize advanced neuroimaging techniques to measure brain connectivity.

Main Methods:

Employed transcranial magnetic stimulation (TMS) and electroencephalography (EEG).
Measured frontal interhemispheric connectivity between the left and right dorsolateral prefrontal cortex.
Assessed personality using the NEO-FFI, a short version of the NEO-PI-R.

Main Results:

Found a significant correlation between prefrontal interhemispheric connectivity and Agreeableness.
This is the first study to demonstrate a link between personality and interhemispheric connectivity using TMS-EEG.
Suggests that Agreeableness is related to efficient communication between the brain hemispheres.

Conclusions:

Agreeableness is associated with the effectiveness of prefrontal interhemispheric communication.
Neurophysiological measures can reveal links between personality and brain function.
Opens new avenues for understanding the neural basis of personality traits.