[Natural electrical activity of human sympathetic nerve fibers recorded from the body surface]. 1984

V V Gerzanich, and Iu S Lisaĭchuk, and I N Remizov, and V I Skok

The electrical potentials recorded from human forearm were stored and averaged as synchronous with the cardiac rhythm. The R-wave of the ECG was used to synchronize the averaging system. The record obtained with this technique from human forearm during transient stop of blood flow to avoid mechanical artifacts was a sinusoid-like curve with peaks between the R-waves of the ECG. The nature of this electronegative wave was investigated by means of comparing electrograms and rheograms recorded from forearm of normal subjects and subjects after denervation or desympathization of their upper extremities. The data obtained suggest that the electronegative wave recorded with this technique is the averaged sum of tonic pulse-synchronous electrical activity of sympathetic nerve's fibers innervating vasoconstrictors of the skeletal muscle.

UI MeSH Term Description Entries
D009132 Muscles Contractile tissue that produces movement in animals. Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D009412 Nerve Fibers Slender processes of NEURONS, including the AXONS and their glial envelopes (MYELIN SHEATH). Nerve fibers conduct nerve impulses to and from the CENTRAL NERVOUS SYSTEM. Cerebellar Mossy Fibers,Mossy Fibers, Cerebellar,Cerebellar Mossy Fiber,Mossy Fiber, Cerebellar,Nerve Fiber
D010992 Plethysmography, Impedance Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the path of the current. (Stedman, 25th ed) Rheography,Impedance Plethysmography,Impedance Plethysmographies,Plethysmographies, Impedance,Rheographies
D011928 Raynaud Disease An idiopathic vascular disorder characterized by bilateral Raynaud phenomenon, the abrupt onset of digital paleness or CYANOSIS in response to cold exposure or stress. Cold Fingers, Hereditary,Raynaud Phenomenon,Raynaud's Disease,Raynauds Disease
D004562 Electrocardiography Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY. 12-Lead ECG,12-Lead EKG,12-Lead Electrocardiography,Cardiography,ECG,EKG,Electrocardiogram,Electrocardiograph,12 Lead ECG,12 Lead EKG,12 Lead Electrocardiography,12-Lead ECGs,12-Lead EKGs,12-Lead Electrocardiographies,Cardiographies,ECG, 12-Lead,EKG, 12-Lead,Electrocardiograms,Electrocardiographies, 12-Lead,Electrocardiographs,Electrocardiography, 12-Lead
D004567 Electrodes, Implanted Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body. Implantable Electrodes,Implantable Stimulation Electrodes,Implanted Electrodes,Implanted Stimulation Electrodes,Electrode, Implantable,Electrode, Implantable Stimulation,Electrode, Implanted,Electrode, Implanted Stimulation,Electrodes, Implantable,Electrodes, Implantable Stimulation,Electrodes, Implanted Stimulation,Implantable Electrode,Implantable Stimulation Electrode,Implanted Electrode,Implanted Stimulation Electrode,Stimulation Electrode, Implantable,Stimulation Electrode, Implanted,Stimulation Electrodes, Implantable,Stimulation Electrodes, Implanted
D005542 Forearm Part of the upper extremity in humans and primates extending from the ELBOW to the WRIST. Antebrachium,Antebrachiums,Forearms
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001134 Arm Injuries General or unspecified injuries involving the UPPER ARM and the FOREARM. Injuries, Arm,Arm Injury,Injury, Arm
D013564 Sympathetic Nervous System The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system. Nervous System, Sympathetic,Nervous Systems, Sympathetic,Sympathetic Nervous Systems,System, Sympathetic Nervous,Systems, Sympathetic Nervous

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