Nerve conduction velocity in man during deep diving to 360 msw. 1989

K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
Department of Neurology, Haukeland Hospital, University of Bergen, Norway.

The function of the sensory and motor median nerves was examined in 6 divers during a simulated dive to 360 meters of seawater (msw), with a mixture of helium and oxygen (heliox) as breathing gas. Divers were examined in the compression chamber before the dive, at 360, 300, 240, 130, 50, and 5 msw, and with skin temperatures ranging from 29.2 degrees to 35.2 degrees C. Examinations were performed with superficial stimulating and recording electrodes. Fast sensory nerve conduction decreased with increase in hyperbaric pressure and with decrease in skin temperature. There was no significant correlation between slow sensory conduction and hyperbaric pressure. Distal motor latency increased with increase in hyperbaric pressure and with decrease in skin temperature. The effect of pressure was independent of temperature. No significant functional changes were detected in the main nerve trunk proximal to the wrist or in the F-wave responses.

UI MeSH Term Description Entries
D008297 Male Males
D008475 Median Nerve A major nerve of the upper extremity. In humans, the fibers of the median nerve originate in the lower cervical and upper thoracic spinal cord (usually C6 to T1), travel via the brachial plexus, and supply sensory and motor innervation to parts of the forearm and hand. Median Nerves,Nerve, Median,Nerves, Median
D009046 Motor Neurons Neurons which activate MUSCLE CELLS. Neurons, Motor,Alpha Motorneurons,Motoneurons,Motor Neurons, Alpha,Neurons, Alpha Motor,Alpha Motor Neuron,Alpha Motor Neurons,Alpha Motorneuron,Motoneuron,Motor Neuron,Motor Neuron, Alpha,Motorneuron, Alpha,Motorneurons, Alpha,Neuron, Alpha Motor,Neuron, Motor
D009431 Neural Conduction The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus. Nerve Conduction,Conduction, Nerve,Conduction, Neural,Conductions, Nerve,Conductions, Neural,Nerve Conductions,Neural Conductions
D004242 Diving An activity in which the organism plunges into water. It includes scuba and bell diving. Diving as natural behavior of animals goes here, as well as diving in decompression experiments with humans or animals. Divings
D004558 Electric Stimulation Use of electric potential or currents to elicit biological responses. Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001341 Autonomic Nervous System The ENTERIC NERVOUS SYSTEM; PARASYMPATHETIC NERVOUS SYSTEM; and SYMPATHETIC NERVOUS SYSTEM taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the CENTRAL NERVOUS SYSTEM, especially the HYPOTHALAMUS and the SOLITARY NUCLEUS, which receive information relayed from VISCERAL AFFERENTS. Vegetative Nervous System,Visceral Nervous System,Autonomic Nervous Systems,Nervous System, Autonomic,Nervous System, Vegetative,Nervous System, Visceral,Nervous Systems, Autonomic,Nervous Systems, Vegetative,Nervous Systems, Visceral,System, Autonomic Nervous,System, Vegetative Nervous,System, Visceral Nervous,Systems, Autonomic Nervous,Systems, Vegetative Nervous,Systems, Visceral Nervous,Vegetative Nervous Systems,Visceral Nervous Systems
D012881 Skin Temperature The TEMPERATURE at the outer surface of the body. Skin Temperatures,Temperature, Skin,Temperatures, Skin

Related Publications

K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
January 1966, Anesthesiology,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
July 1953, Minerva medica,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
August 1966, Rivista di patologia nervosa e mentale,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
October 1964, Lille medical : journal de la Faculte de medecine et de pharmacie de l'Universite de Lille,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
July 1968, Electroencephalography and clinical neurophysiology,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
March 1975, La Revue du praticien,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
January 1968, Electromyography,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
February 1964, No to shinkei = Brain and nerve,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
November 1964, Ceskoslovenska neurologie,
K Todnem, and G Knudsen, and T Riise, and H Nyland, and J A Aarli
January 1971, Acta neurologica Scandinavica,
Copied contents to your clipboard!