Graeme Clark Collection

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Author: Clark, Graeme × Author: Shepherd, Robert × End date: 1999 × Start date: 1990 × Type: Journal Article × Subject: deafness × Subject: electrical stimulation ×

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Now showing 1 - 2 of 2
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    Acute effects of high-rate stimulation on auditory nerve function in guinea pigs
    Tykocinski, M. ; Shepherd, R. K. ; Clark, Graeme M. ( 1995)
    Cochlear implants have been shown to successfully provide profoundly deaf patients with auditory cues for speech discrimination. Furthermore, a number of safety studies using the Melbourne/Cochlear electrode array indicated that chronic electrical stimulation using charge-balanced biphasic current pulses and stimulus rates between 100 and 500 pulses per second (pps) do not result in additional spiral ganglion loss or general cochlear pathology.1-3 However, safe maximum levels for stimulus parameters (stimulus rate, charge per phase, charge density) have not yet been adequately defined.
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    Electrical stimulation of residual hearing in the implanted cochlea
    Clark, Graeme M. ; McAnally, K. I. ; Black, R. C. ; Shepherd, R. K. ( 1995)
    The average profoundly deaf person using a cochlear implant can now understand more speech than some severely to profoundly deaf people who use a hearing aid. For this reason there will be an increasing need to consider implanting people with residual hearing. In many of these people there could be significant hearing in the operated ear, as a majority of severely to profoundly deaf people are likely to have a symmetrical hearing loss. When three frequency average hearing thresholds were measured on 219 pensioners from the Australian National Acoustic Laboratories (H. Dillon, unpublished findings), 64% had less than a 10-dB difference between thresholds in each ear.