Polarity order of biphasic square pulse electric current stimulation of human cochlear nerve: observations with transtympanic electrodes.
Eighteen totally deaf human cochleae were stimulated with biphasic square pulses of current through transtympanic needle electrodes. The thresholds of the 2 polarity orders, + - and - +, were compared for various pulse durations. For a pulse duration of 500 microseconds the polarity order - + had the lower threshold. For pulse durations of 2 ms and longer, the polarity order + - had the lower threshold. A discussion is given of the significance of the results for finding out the site of cochlear nerve excitation by the stimuli.
Game
C J
CJ
University of Sydney, N.S.W. Australia.
Thomson
D R
DR
Gibson
W P
WP
Pauka
C K
CK
D003056:Cochlear Nerve / Q000503:physiopathology*; D004558:Electric Stimulation / Q000379:methods*; D006801:Humans; D014432:Tympanic Membrane