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The Cortical Structural Mediators of Cognitive Enhancement in Computer Game Players: Evidence From Mendelian
1School of Physical Education, Yantai University, Yantai, China.
Games for Health Journal
|February 17, 2026
Summary
Computer gaming causally enhances cognitive functions like visual memory and reaction time. These improvements are mediated by structural changes in the brain's rostral anterior cingulate cortex, suggesting gaming's therapeutic potential.
Area of Science:
- Neuroscience
- Behavioral Genetics
- Cognitive Psychology
Background:
- The relationship between computer gaming and cognitive abilities is widely studied but lacks clear causal evidence.
- Mendelian randomization (MR) offers a method to infer causality using genetic variants.
Purpose of the Study:
- To investigate the causal effects of computer gaming on cognitive functions.
- To explore the mediating role of brain cortical structure in this relationship using a two-step MR approach.
Main Methods:
- Utilized two-sample Mendelian randomization (MR) with publicly available genome-wide association study data.
- Assessed direct associations between computer gaming and cognitive function (visual memory, reaction time).
- Investigated mediation via brain cortical structure, specifically the rostral anterior cingulate cortex.
Main Results:
- Significant positive causal effects of computer gaming on visual memory (P = 1.98 × 10^-13) and reaction time (P = 4.40 × 10^-16).
- The cortical surface area of the rostral anterior cingulate cortex was identified as a significant mediator, explaining 6.88% of the effect (P = 0.026).
- Sensitivity analyses confirmed the robustness of the findings.
Conclusions:
- Provides evidence for a causal link between computer gaming and enhanced cognitive function.
- Suggests that changes in brain cortical structure, particularly the rostral anterior cingulate cortex, mediate these cognitive improvements.
- Highlights the potential of computer gaming for cognitive training and rehabilitation interventions.
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