Far-field potentials from peripheral nerve: generated at sites of muscle mass change.
Using a forearm-sternal referential recording montage, three peripheral nerve far-field potentials, P4, P7, and P9, were elicited by median nerve stimulation. The latencies correlated with the distances between the stimulating cathode at the wrist and the proximal forearm, mid-upper arm, and the shoulder, respectively. At these sites, the electrophysical characteristics of the surrounding volume conductor suddenly changes. Altered girth of muscle mass seemed to be a factor.
Eisen
A
A
Odusote
K
K
Bozek
C
C
Hoirch
M
M
D000293:Adolescent; D000328:Adult; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000502:physiology; D010525:Peripheral Nerves / Q000502:physiology*