Aerobic exercise alters brain activity during cognitive tasks, study finds
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Researchers from Japan's AIST and UT Southwestern found aerobic exercise changes brain activity during cognitive tasks. The study used fMRI on healthy young and older adults. Repetition of tasks also improved brain efficiency, especially in older participants.
Key Facts
- The study was conducted by Japan's National Institute of Advanced Industrial Science and Technology (AIST) and UT Southwestern Medical Center.
- Functional MRI was used to separate the effects of exercise from those of task repetition.
- In older participants, reduced brain activity during repeated tasks correlated with better performance.
- Researchers suggest that task habituation may help the brain process information more efficiently.
Study Design
Researchers from AIST and UT Southwestern Medical Center examined how aerobic exercise affects brain activity during cognitive tasks. The study included healthy young and older adults. Functional MRI allowed the team to distinguish the influence of physical exertion from that of repeated task performance.
Key Findings
Aerobic exercise changed activity patterns in specific brain regions during cognitive tasks. Task repetition also significantly affected brain efficiency. In older adults, decreased brain activity with repetition was linked to improved task performance. This correlation suggests that becoming accustomed to a task may enable more efficient information processing.
Implications
Visualizing brain activity changes after exercise could help assess the benefits of regular physical activity. The findings may encourage people to continue exercising. In the future, the results could support new approaches to maintaining cognitive function and preventing age-related memory decline.
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