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Brain Stimulation Over the Motion-Sensitive Midtemporal Area Reduces Deleterious Effects of Mental Fatigue on Perceptual–Cognitive Skills in Basketball Players

Leonardo S. Fortes, Maria E.C. Ferreira, Heloiana Faro, Eduardo M. Penna, and Sebastião S. Almeida

The objective of this study was to analyze the effect of anodal transcranial direct current stimulation (a-tDCS) over the motion-sensitive midtemporal area on perceptual–cognitive skills (visuomotor and basketball decision-making skills) in mentally fatigued basketball players. A total of 20 male basketball players were recruited. This was a randomized, double-blinded, and counterbalanced crossover study with two experimental conditions: a-tDCS and Sham. The participants completed the basketball decision-making task and visuomotor skill after performing a 60-min sport-based videogame task with anodal (i.e., a-tDCS) or placebo (Sham) stimulation over the motion-sensitive middle temporal area. Worse response time was observed in visuomotor skill for Sham than a-tDCS postexperiment (p < .05). There was no main condition effect for accuracy of visuomotor skill (p > .05). There was more impairment in accuracy and response time in basketball decision-making skills for the Sham condition than a-tDCS (p < .05). Notably, a-tDCS over the motion-sensitive middle temporal area removed the negative effects of mental fatigue on perceptual–cognitive skills.

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Repeated Use of Transcranial Direct Current Stimulation Over the Dorsolateral Prefrontal Cortex Before Training Changes Visual Search and Improves Decision-Making Response Time in Soccer Athletes

Leonardo S. Fortes, Maicon R. Albuquerque, Heloiana K.C. Faro, Dalton de Lima-Júnior, Maria E.C. Ferreira, and Sebastião S. Almeida

The study aimed to analyze the effect of anodal transcranial direct current stimulation (a-tDCS) over the left dorsolateral prefrontal cortex on soccer athletes’ decision making and visual search behavior. It was a single-blind, randomized, and experimental investigation. The 23 soccer athletes were pair-matched according to decision-making skill and then randomized into two groups: a-tDCS and sham. The decision making (during small-sided game and screen task) and visual search behavior were measured before and after the 8-week intervention. Only the a-tDCS group reduced response time in the decision-making screen task (p < .05). The a-tDCS group showed a higher number of fixations than sham group (p < .05) during the small-sided game. The a-tDCS group showed a lower duration of fixation than sham group (p < .05) during the small-sided game. Our results indicated that using a-tDCS over left dorsolateral prefrontal cortex changed visual search behavior and improved the response time of decision-making skill.