The correlation between the stimulation frequency and the dilator response evoked by 'antidromic' excitation of the thin afferent fibres in the dorsal roots.
D001775:Blood Circulation; D012018:Reflex; D013126:Spinal Nerve Roots; D013127:Spinal Nerves / Q000502:physiology*
BLOOD CIRCULATION; NERVES, SPINAL/physiology; REFLEX