Which nerve fibers mediate the axon reflex flare in human skin?

M Schmelz, K Michael, C Weidner, R Schmidt… - …, 2000 - journals.lww.com
Axon reflex vasodilatation due to transcutaneous electrical stimulation in human skin was
measured by laser Doppler imaging. Constant current pulses of 10 mA, 0.2 ms, delivered at
1 or 10 Hz for 2 min through a probe of 30 mm 2 surface area did not induce a significant
flare response, though this stimulus previously has been found supra-maximal for cutaneous
poly-modal (mechano-heat responsive) C-nociceptors in microneurography experiments.
Pulses of the same strength from a pointed probe yielding a higher current density induced …