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.
Fierro
B
B
Department of Neuropsychiatry, University of Palermo, Italy.
Raimondo
D
D
Modica
A
A
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*