Effects of low-power laser irradiation on multiple unit discharges induced by noxious stimuli in the anesthetized rabbit.
This study discusses the effects of low-power laser irradiation upon multiple unit discharges within a peripheral nerve that were induced by a noxious stimulation in anesthetized rabbits.  Responding to a pinch stimulation of plantar skin, transitory increase of neuronal discharges was induced in the sural nerve.  This was reduced within a minute, and persistent increases, which continued during a period of the stimulation, occurred.  These increases became significantly smaller than the control value during a low-power laser irradiation that was applied to the exposed sural nerve distal to the recording site.  These results suggested an inhibitory effect of low-power laser irradiation on the impulse conduction within a peripheral nerve. Possible analgesic effects of low-power irradiation are discussed.
Department of Surgery, Asahikawa Medical College, Hokkaido, Japan.
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S
Kasai
T
T
Kono
T
T
Sakamoto
M
M
Mito
D000818:Animals; D005260:Female; D006801:Humans; D053685:Laser Therapy; D007834:Lasers; D008297:Male; D008954:Models, Biological; D009431:Neural Conduction / Q000528:radiation effects*; D009433:Neural Inhibition / Q000528:radiation effects*; D011817:Rabbits; D013497:Sural Nerve