The effect of water immersion on short-latency somatosensory evoked potentials in human |
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Authors: | Daisuke Sato Koya Yamashiro Hideaki Onishi Yoshimitsu Shimoyama Takuya Yoshida Atsuo Maruyama |
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Affiliation: | (1) Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Shimami- cho 1398, kita-ku, Niigata city Japan, 950-3198;(2) Department of Health and Sports, Niigata University of Health and Welfare, Shimami- cho 1398, kita-ku, Niigata city Japan, 950-3198;(3) Department of Physical Therapy, Niigata University of Health and Welfare, Shimami- cho 1398, kita-ku, Niigata city Japan, 950-3198 |
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Abstract: | Background Water immersion therapy is used to treat a variety of cardiovascular, respiratory, and orthopedic conditions. It can also benefit some neurological patients, although little is known about the effects of water immersion on neural activity, including somatosensory processing. To this end, we examined the effect of water immersion on short-latency somatosensory evoked potentials (SEPs) elicited by median nerve stimuli. Short-latency SEP recordings were obtained for ten healthy male volunteers at rest in or out of water at 30°C. Recordings were obtained from nine scalp electrodes according to the 10-20 system. The right median nerve at the wrist was electrically stimulated with the stimulus duration of 0.2 ms at 3 Hz. The intensity of the stimulus was fixed at approximately three times the sensory threshold. |
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