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CREB1 Genotype Modulates Adaptive Reward-Based Decisions in Humans
Claudia Wolf1, Holger Mohr2, Esther K Diekhof3
1Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry and Psychotherapy, Georg-August-University Göttingen, Göttingen 37075, Germany Laboratory of Behavioral Neuroscience, National Institute of Aging, Baltimore, MD 21224-6825, USA.
Cerebral Cortex (New York, N.Y. : 1991)
|June 6, 2015
Summary
Genetic variations in CREB1 influence human decision-making in reward-based tasks. This study links CREB1 genotypes to brain activity in regions crucial for reward processing and memory.
Area of Science:
- Neuroscience
- Behavioral Genetics
Background:
- Cyclic AMP response element-binding protein (CREB) is vital for neuronal plasticity and adapting brain networks.
- CREB activity in the nucleus accumbens (NAc) and orbital frontal cortex (OFC) influences reward learning, but human relevance is unclear.
Purpose of the Study:
- To investigate the impact of CREB1 gene variations on human reward-motivated decision-making.
- To examine how CREB1 genotypes affect brain activation patterns during reward-based choices.
Main Methods:
- Utilized BOLD fMRI in 224 healthy young adults.
- Assessed participants' decisions to pursue or resist immediate rewards to optimize outcomes.
- Correlated CREB1 genotypes with behavioral choices and neural activity.
Main Results:
- Found significant effects of CREB1 genotypes on decisions to increase reward outcomes.
- Observed genotype-dependent BOLD signals in the NAc, OFC, insula, cingulate gyrus, hippocampus, amygdala, and precuneus.
- Differentiated brain activity between pursuing rewards and avoiding losses.
Conclusions:
- CREB1 genotype influences human reward-based decision-making.
- Specific CREB1 genotypes are associated with differential activation in key reward and memory brain regions.
- These findings suggest CREB1 genetic variations contribute to individual differences in decision-making processes.
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