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Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
Published on: March 17, 2019
Effects of emotional context on impulse control
Matthew R G Brown1, R Marc Lebel, Florin Dolcos
1Dept. of Psychiatry, University of Alberta, Canada. mbrown2@ualberta.ca
Neuroimage
|July 12, 2012
Summary
Impulse control and emotional processing in the brain
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Affective Neuroscience
Background:
- Impulsive behaviors, linked to substance use and aggression, stem from poor decision-making in emotional situations.
- The inferior frontal gyrus (IFG) is crucial for impulse control and emotional processing, but how these functions interact is unclear.
Purpose of the Study:
- To investigate the neural mechanisms underlying the interaction between response inhibition and emotion processing in the inferior frontal gyrus (IFG).
- To examine how emotional context influences the brain's ability to control impulsive behaviors.
Main Methods:
- Utilized 4.7 T functional magnetic resonance imaging (fMRI) in 20 healthy young adults.
- Employed a rapid event-related emotional Go/NoGo task, incorporating neutral and aversive distractor images.
Main Results:
- Response inhibition and aversive emotional processing in IFG showed additive (linear) interactions, not interference or enhancement.
- Identified novel interaction effects in other brain regions, suggesting attention and conflict resolution interplay.
Conclusions:
- Response inhibition and aversive emotion processing activities combine linearly within the IFG.
- Emotional stimuli interact with cognitive control processes in brain regions beyond IFG, impacting attention and conflict resolution.
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