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Related Experiment Video

Updated: Nov 18, 2025

Studying Food Reward and Motivation in Humans

Studying Food Reward and Motivation in Humans

Published on: March 19, 2014

Associations between different white matter properties and reward-based performance modulation.

Haeme R P Park^1,2,3, Helena Verhelst⁴, Michel Quak⁵

¹Department of Experimental Psychology, Ghent University, Ghent, Belgium. haeme.park@gmail.com.

Brain Structure & Function

|February 4, 2021

Summary

This summary is machine-generated.

White matter microstructure in specific brain tracts influences how people respond to rewards. Lower white matter integrity in these areas correlates with greater reward sensitivity and faster reaction times.

Keywords:

Diffusion Fixel-based analysis Inter-individual differences MRI Reward White matter

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Published on: May 7, 2014

Area of Science:

Neuroscience
Cognitive Neuroscience
Neuroimaging

Background:

Individual differences in reward sensitivity are significant.
White matter (WM) microstructure alterations are a potential mechanism for these differences.
The link between WM properties and reward-based behavior in healthy individuals remains underexplored.

Purpose of the Study:

To investigate associations between white matter tracts and performance in a reward-cuing task.
To explore the relationship between white matter microstructure and individual differences in reward sensitivity.

Main Methods:

Fixel-based analysis of white matter microstructure.
Utilized a reward-cuing task to assess behavioral performance.
Correlated white matter properties with reaction times and Behavioral Inhibition System scores.

Main Results:

Inverse relationship found between WM properties in corpus callosum, uncinate fasciculus, ventral cingulum, and accumbofrontal tracts and reward-triggered performance benefits (faster reaction times).
Smaller WM property values in corpus callosum, uncinate fasciculus, and accumbofrontal tracts associated with higher Behavioral Inhibition System scores (greater punishment sensitivity).
Associations observed between functional hemodynamic activity in the ventral striatum and WM microstructure.

Conclusions:

Lower white matter integrity in specific tracts is linked to enhanced reward-based performance benefits and increased sensitivity to punishment.
This finding contrasts with previous studies linking higher WM metrics to superior cognitive performance.
The results suggest that enhanced susceptibility to motivationally relevant stimuli, indicated by lower WM integrity, may be beneficial up to a point, beyond which it could impair performance and contribute to impulsive or addictive behaviors.