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Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
Published on: February 14, 2014
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Exercise, Dopamine, and Cognition in Older Age.
Eric J Juarez1, Gregory R Samanez-Larkin1
1Department of Psychology and Neuroscience, Duke University, Durham, NC, USA; Center for Cognitive Neuroscience, Duke University, Durham, NC, USA.
Trends in Cognitive Sciences
|November 10, 2019
Summary
Aerobic exercise did not alter working memory performance, despite a decrease in dopamine D2 receptors. Individual differences in dopamine D2 receptors were unrelated to cognitive performance in this study.
Area of Science:
- Neuroscience
- Exercise Physiology
- Cognitive Psychology
Background:
- Dopamine D2 receptors (D2R) play a crucial role in cognitive functions, particularly working memory.
- The impact of aerobic exercise on D2R and cognitive performance is not fully understood.
- Individual differences in D2R may influence responses to exercise interventions.
Purpose of the Study:
- To examine the relationship between individual differences in human dopamine D2 receptors (D2R) and cognitive performance.
- To assess changes in D2R and working memory following a 6-month aerobic exercise intervention.
- To compare the effects of aerobic exercise with an active control group.
Main Methods:
- Participants underwent a 6-month intervention, with one group engaging in aerobic exercise and the other in an active control condition.
- Dopamine D2 receptor availability was measured.
- Working memory performance was assessed at baseline and post-intervention.
Main Results:
- Dopamine D2 receptor availability showed a decrease in the aerobic exercise group compared to the control group.
- No significant relationship was found between D2R levels and working memory performance at baseline.
- Working memory performance did not differ between groups or change significantly following the intervention, irrespective of D2R levels.
Conclusions:
- Aerobic exercise may lead to a reduction in dopamine D2 receptor availability.
- Individual differences in D2R are not associated with working memory capacity or its modulation by aerobic exercise.
- Further research is needed to elucidate the complex interplay between dopamine receptors, exercise, and cognition.
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