Axon reflexes in human cold exposed fingers
article
Exposure of fingers to severe cold induces cold induced vasodilation (CIVD). The mechanism of CIVD is still debated. The original theory states that an axon reflex causes CIVD. To test this hypothesis, axon reflexes were evoked by electrical stimulation of the middle fingers of hands immersed in water at either 5°C or 35°C. Axon reflexes were pronounced in the middle finger of the hand in warm water, but absent from the hand in cold water, even though the stimulation was rated as 'rather painful' to 'painful'. These results showed that axon reflexes do not occur in a cold-exposed hand and thus are unlikely to explain the CIVD phenomenon.
Topics
Cold-induced vasodilatationFinger blood flowLaser Doppler flowmetryadultarticlecold exposureelectrostimulationfinger blood flowhumanhuman experimentlaser Doppler flowmetrymalenerve fibernormal humanpriority journalreflexskin temperaturevasodilatationwater immersionAdultAxonsColdElectric ImpedanceElectric StimulationFingersHumansMalePainReflexVasodilation
TNO Identifier
9901
Source
European Journal of Applied Physiology, 81(3), pp. 240 - 244.
Pages
240 - 244
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