Short latency vestibular potentials evoked by electrical round window stimulation in the guinea pig.

Electroencephalography and Clinical Neurophysiology
P BordureA Sans

Abstract

Short-latency potentials evoked by round window electrical stimulation were recorded in guinea pig by means of vertex-pinna skin electrodes using averaging techniques. Constant current shocks of 20 microseconds or 50 microseconds (25-300 microA) were used to evoke both auditory and vestibular brain-stem potentials. Pure auditory potentials, comparable to those evoked by acoustic clicks, were obtained by 20 microseconds electrical stimuli and disappeared during an auditory masking procedure made with a continuous white noise (110 dB SPL). Short latency potentials labeled V1, V2 and V3 were obtained by 50 microseconds electrical stimuli during an auditory masking procedure. This response disappeared after specific vestibular neurectomy, whereas the auditory response evoked by acoustic clicks or by electrical stimulation remained unchanged, suggesting that these latter potentials had a vestibular origin.

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Citations

Sep 1, 1994·Electroencephalography and Clinical Neurophysiology·R Charlet de SauvageJ M Aran
Nov 27, 2002·Neurophysiologie clinique = Clinical neurophysiology·Elisabeth SauvagetPhilippe Bordure
Aug 23, 2001·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·K SugasawaJ M Aran
Feb 24, 1998·The Laryngoscope·M L BanceR T Ramsden
Jan 22, 2005·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Toshihisa MurofushiHideki Takegoshi

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