Abstract
Action potential measurements were taken from a non-participating body member of a group of 20 subjects responding in a simple reaction time situation to a visual stimulus. The reaction time was found to decline steadily over a period of 6 successive practice days of 100 trials each. The action potential during the foreperiod and at the moment of the response was found to decline during the 1st 4 days of practice, then to rise on days 5 and 6. Although the terminal rise in action potential was not statistically significant, a tentative hypothesis was advanced which explains the rise in terms of increased motivation to improve as the asymptote of learning is reached.
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