Der Einflu� von Adrenalin auf die T�tigkeit des ?Sympathicus?

The modulation of visceral functions by somatic afferent activity.

“…Systematic electrophysiological studies of this subject were started by Schaefer's group [60,64] who first found that the central reflex pathway for the somato-cardiac sympathetic reflex discharges was supraspinal. Their studies were continued by COOTE and DoWNMAN [7] who then observed a cardiac spinal sympathetic reflex component.…”

“…This was the first demonstration that the spinal reflex component of the somato-sympathetic reflex response had a strong segmental organization, whereas the supraspinal (medullary) reflex component was generalized. This supraspinal reflex component conforms with investigations in which somatically evoked reflexes were recorded from more peripheral sites of the sympathetic nervous system, such as the renal and cardiac sympathetic nerves [7,29,60,64]. Myelinated and unmyelinated somatic afferents evoke sympathetic reflexes.…”

“…ALEXANDER [2] recorded somatically evoked sympathetic reflex discharges directly from the sympathetic nerves. Schaefer and his colleagues (1958,1963) [60,64] reported that somatic afferent stimulation usually elicited generalized massive reflex efferent discharge in all types of sympathetic nerves followed by a generalized postexcitatory depression. Their work established the brain stem as the primary center of the somato-sympathetic reflexes.…”