A new method for measuring the conduction velocities of Abeta-, Adelta- and C-fibers following electric and CO(2) laser stimulation in humans.
The conduction velocities of Abeta-, Adelta- and C-fibers of a peripheral nerve of the upper limb in normal subjects were measured by a combination of conventional electric stimulation, painful CO(2) laser stimulation and non-painful CO(2) laser stimulation of a tiny skin surface area, respectively. The values obtained were 69.1+/-7.4 m/s, 10.6+/-2.1 and 1.2+/-0.2 m/s, respectively. These findings demonstrated that the combined methods are useful for experimental and clinical exploration of the physiological function and pathophysiological role of Abeta-, Adelta- and C-fibers of a given peripheral nerve.
Department of Integrative Physiology, National Institute for Physiological Sciences, Myodaiji, 444-8585, Okazaki, Japan.
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Tran
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Lam
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Hoshiyama
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Kakigi
D000328:Adult; D002245:Carbon Dioxide; D004558:Electric Stimulation / Q000379:methods*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D006801:Humans; D007834:Lasers; D008297:Male; D009412:Nerve Fibers / Q000502:physiology*; D009413:Nerve Fibers, Myelinated / Q000502:physiology*; D009431:Neural Conduction / Q000502:physiology*; D010146:Pain / Q000175:diagnosis; D010525:Peripheral Nerves / Q000502:physiology; D012867:Skin / Q000294:innervation
D002245:Carbon Dioxide