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Motor behavior-induced prefrontal cortex activation and episodic memory function.
Paul D Loprinzi1, Lindsay Crawford1, Damien Moore1
1Exercise & Memory Laboratory Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS, USA.
The International Journal of Neuroscience
|July 31, 2020
Summary
Acute exercise, saccadic eye movements, and fist clenching enhance episodic memory. These activities may improve memory by increasing prefrontal cortex oxygenation, boosting cognitive function.
Area of Science:
- Cognitive Neuroscience
- Exercise Physiology
- Neuroscience
Background:
- Investigating cognitive enhancement strategies is crucial for understanding brain function.
- Episodic memory is a key cognitive function susceptible to various interventions.
Purpose of the Study:
- To determine the effects of acute exercise and bilateral interhemispheric activation on episodic memory.
- To explore the underlying neural mechanisms, specifically prefrontal cortex oxygenation.
Main Methods:
- Six experiments were conducted, including within-subject designs comparing exercise, saccadic eye movements, fist clenching, and control conditions.
- Episodic memory was assessed using word-list recall with a 20-min delay.
- Prefrontal cortex oxygenation was measured using near-infrared spectroscopy as a proxy for neuronal activity.
Main Results:
- Acute exercise, saccadic eye movements, and fist clenching individually enhanced episodic memory function.
- All three interventions (exercise, saccadic eye movements, fist clenching) increased prefrontal cortex oxygenation.
- Prefrontal cortex oxygenation was positively correlated with episodic memory performance.
Conclusions:
- Acute exercise, saccadic eye movements, and fist clenching show potential for improving memory.
- These memory enhancements may be mediated by increased prefrontal cortex oxygenation.
- The findings suggest simple behavioral interventions can positively impact cognitive function.
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