title: Muscle nerve sympathetic activity following ectopic heart beats--a note on the burst pattern of sympathetic impulses.
abstract: Under normal conditions in man, sympathetic activity in muscle nerves occurs in bursts that are synchronized with the cardiac rhythm by inhibitory influence from high-pressure baroreceptors. Analysis of sympathetic outflow following ectopic heart beats indicated that in this situation the activity subsides without being inhibited by a baroreceptor input. It is concluded that the activity has an inherent characteristic of occurring not as a continuous outflow, but in clearly defined bursts.
authors: Department of Neurology and Clinical Neurophysiology, Uppsala University, Sweden.
authors: J
authors: J
authors: Fagius
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004562:Electrocardiography; D006801:Humans; D009132:Muscles / Q000294:innervation*; D009462:Neurology / Q000379:methods; D011311:Pressoreceptors / Q000502:physiology; D011930:Reaction Time; D012018:Reflex / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology*