Journal article

ELECTRICAL-STIMULATION OF THE AUDITORY-NERVE - THE EFFECT OF ELECTRODE POSITION ON NEURAL EXCITATION

RK SHEPHERD, S HATSUSHIKA, GM CLARK

HEARING RESEARCH | ELSEVIER SCIENCE BV | Published : 1993

Abstract

Histological studies have shown that the Melbourne/Cochlear electrode array lies along the outer wall of the scala tympani and is therefore some distance from the residual VIIIth nerve elements. In order to investigate the influence of electrode position on neural excitation we systematically varied the position of the electrode array within the cat scala tympani while recording electrically evoked auditory brainstem responses (EABRs). Using both normal hearing and long-term deafened animals, we observed significant reductions in EABR thresholds as the electrode array was moved from the outer wall towards the modiolus. Further threshold reductions were observed when the array was placed unde..

View full abstract

University of Melbourne Researchers