Cognition and Brain Activation in Response to Various Doses of Caffeine: A Near-Infrared Spectroscopy Study.

ABSTRACT: Caffeine, which is widely used for enhancing athletic performance, has been suggested to have a positive impact on cognition via stimulating the brain. However, no study published to date has explored the effects of different doses of caffeine ingestion on brain activation via cortical hemodynamics. The purpose of the present crossover, double-blind study was to investigate the effects of low, moderate, and high doses of caffeine ingestion on cognitive performance and brain activation. Ten healthy male subjects ingested placebo or caffeine (3, 6, or 9 mg/kg body mass). The effects of each treatment condition were evaluated by Stroop tasks before and 60 min after the ingestion of caffeine. Reaction time (RT) and accuracy of responses to congruent and incongruent stimuli were assessed. As an

SUBMITTER: Zhang B 

PROVIDER: S-EPMC7350703 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature