Somatotopic arrangement of sudomotor axon reflex sweating in humans

QSART and sudomotor axon reflex areas had similar somatotopic arrangements in human skin. The bigger the axon reflex area was the stronger the QSART response was. This indicates that the size of the innervation territories of sudomotor fibres covaries with the amount of local sweat production. The latter is a surrogate for increased sweat gland density or capacity in skin areas of dense sudomotor innervation.