The absence of fibres in the sural nerve mediating vasoconstriction.
D004558:Electric Stimulation; D005071:Evoked Potentials; D006801:Humans; D009412:Nerve Fibers / Q000502:physiology; D009413:Nerve Fibers, Myelinated / Q000502:physiology; D013127:Spinal Nerves / Q000502:physiology*; D013497:Sural Nerve / Q000502:physiology*; D014666:Vasomotor System / Q000502:physiology*