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Updated: Aug 10, 2026

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents
Published on: August 10, 2014
Effects of caffeine on simple reaction time and movement time
1Oklahoma State University, Stillwater 74078-0616.
Abstract:
There were 19 males and 11 females with a mean age of 21 +/- 3 years and a mean weight of 72.8 +/- 3.2 kg who participated in an experiment to investigate the effect of caffeine on simple reaction time (RT) and movement time (MT). Subjects were randomly assigned to one of three groups--two experimental groups and one control group. Caffeine was administered using a double-blind format: Group 1, 600 mg caffeine; Group 2, 300 mg caffeine. Group 3, the control group, was given a placebo. All subjects were pre-tested for RT and MT prior to consumption of one of the three solutions. Post-test was conducted subsequent to an absorption period of 45 min. Results indicated a significant effect (p less than 0.05) between pre- and post-test measurements for both RT and MT favoring the 300 mg group. However, no significant effect (p greater than 0.05) was found between pre- and post-test measurements for RT or MT in the 600-mg group.
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