Graeme Clark Collection

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Subject: cochlear implant × Subject: electrical stimulation × Type: Conference Item × Author: Shepherd, Robert × Start date: 1982 × End date: 1989 ×

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    Chronic electrical stimulation of the auditory nerve in cats
    Shepherd, R. K. ; Clark, Graeme M. ; Black, R. C. ; Patrick, J. F. ( 1982)
    One requirement for the success of a cochlear hearing prosthesis is that long-term electrical stimulation must not have adverse effects on the residual spiral ganglion cell population. Electrochemically 'safe' stimulation regimes have been defined for the cortex (Brummer &Turner, 1977). However, few investigators have examined the effects of long-term intracochlear electrical stimulation. Walsh et al (1980), stimulating with current densities greater than the 'safe' limits defined by Brummer &Turner (1977), for periods of up to 800 hours at current levels of 4.0-8.0 mA, recorded slight local neural degeneration adjacent to the electrodes.