Journal
BRAIN SCIENCES
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/brainsci10080560
Keywords
brain training; prediction; NIRS; cognitive improvement; randomized control trial; dorsolateral prefrontal cortex
Categories
Funding
- JSPS KAKENHI [15H05366, 16KT0002, 19H01760]
- JSPS Leading Initiative for Excellent Young Researchers (LEADER) program
- NeU Corporation
- Grants-in-Aid for Scientific Research [19H01760, 16KT0002, 15H05366] Funding Source: KAKEN
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Background: Recent studies have demonstrated that brain activities using NIRS (near-infrared spectroscopy) at baseline during cognitive tasks (e.g., N-back task) can predict the cognitive benefits of a cognitive training. In this study, we investigated whether brain activities during brain training game (BT) at baseline would predict benefits to cognitive functions after the intervention period. Methods: In a four-week double-blinded randomized control trial (RCT) 72 young adults were randomly assigned to one of the two groups: participants in the BT group played specific game, called the Brain Age. Participants in an active control group (ACT) played the puzzle game Tetris. We measured brain activity during the training games using two channel NIRS before the intervention period. Cognitive functions were tested before and after the four-week intervention period. Results: The BT showed significant improvements in inhibition, processing speed, and working memory performance compared to ACT. The left and right DLPFC (dorsolateral prefrontal cortex) brain activities during the BT at baseline were associated with improvements in inhibition and processing speed. Discussion: This randomized control trial first provides scientific evidence that DLPFC activities during BT at baseline can predict cognitive improvements after a four-week intervention period.
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