Graeme Clark Collection

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Temporal and spatial coding in auditory prostheses

Shepherd, Robert K. ; Maffi, C. L. ; Hatsushika, Shin-ichi ; Javel, E. ; Tong, Yit C. ; Clark, Graeme M. (Wiley-Liss, 1990)

By direct electrical stimulation of residual auditory nerve fibres, auditory prostheses by-pass the normal electro-mechanical transduction properties of the cochlea in patients who have few -if any -surviving inner or outer hair cells. These devices interface directly with the auditory nerve via stimulating electrodes placed within the scala tympani of the cochlea. While the great majority of profoundly-totally deaf patients using multiple-channel auditory prostheses receive considerable benefit from their device (Brown et al., 1987), a greater understanding of the basic response properties of the auditory nerve to electrical stimulation should result in the development of improved electrical stimulation regimes and electrode array designs. It is the purpose of this chapter to review these basic neural response properties.