• Percept Mot Skills · Jun 1993

    An examination by forearm EMG on pain reaction time to radiant heat.

    • T Hatayama and K Shimizu.
    • Department of Psychology, Tohoku University, Sendai, Japan.
    • Percept Mot Skills. 1993 Jun 1;76(3 Pt 2):1139-46.

    AbstractThe present study was done to estimate rise in skin temperature during a pain reaction time (pain RT) as a means of investigating why a pricking pain threshold, produced by thermal stimulation using time method, often increases during repeated measurements. The pain RT, or the time-delay between occurrence of pain sensation and a subsequent motor response, was measured by making EMG recording on a forearm. The radiant heat stimuli were three, 200, 300, and 350 mcal/sec./cm2, each of which was given through a round radiation window of an algesiometer head. Analysis showed that the pain RTs would be too short to explain higher pain thresholds often found using the time method.

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