F-wave study at different stimulation rates.
In 50 ulnar nerves of healthy subjects, F-wave latency, duration, amplitude and persistence were determined at different frequencies of the antidromic impulse (0.2-0.5-1-2 Hz). The F amplitude and persistence were found significantly increased at higher stimulation rates, suggesting that the frequency of the antidromic impulse influences the motoneuron pool discharges. Individual cross-correlation values (r) obtained for latency and duration, latency and amplitude, amplitude and duration did not show any significant changes at different stimulation rates.
Department of Neuropsychiatry, University of Palermo, Italy.
B
B
Fierro
D
D
Raimondo
A
A
Modica
D000293:Adolescent; D000328:Adult; D000368:Aged; D016009:Chi-Square Distribution; D004558:Electric Stimulation; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011930:Reaction Time; D012016:Reference Values; D014459:Ulnar Nerve / Q000502:physiology*