Graeme Clark Collection

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Author: Blamey, Peter × Subject: otolaryngology × Type: Journal Item × Start date: 1981 × End date: 1989 ×

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Now showing 1 - 9 of 9
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    The effects of electrode position and stimulus period on the hearing sensations in a multiple-channel cochlear implant patient [Abstract]
    Tong, Y. C. ; Blamey, P. J. ; Dowell, R. C. ; Clark, Graeme M. ( 1981)
    Abstract not available due to copyright.
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    Perceptual dissimilarity and discrimination studies using two-electrode stimulation with a multiple-channel cochlear implant patient [Abstract]
    Dowell, R. C. ; Tong, Y. C. ; Blamey, P. J. ; Clark, Graeme M. ( 1981)
    Abstract not available due to copyright.
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    Speech feature encoding through an electrotactile speech processor [Abstract]
    Cowan, Robert S. C. ; Blamey, Peter J. ; Alcantara, Joseph I. ; Whitford, Lesley A. ; Clark, Graeme M. ( 1989)
    Abstract not available due to copyright.
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    Results in children using the 22 electrode cochlear implant [Abstract]
    Dawson, Pam W. ; Blamey, Peter J. ; Clark, Graeme M. ; Busby, P. A. ; Rowland, L.C. ; Dettman, S. J. ; Brown, A. M. ; Dowell, Richard C. ; Rickards, Field W. ; Alcantara, Joseph I. ( 1989)
    Abstract not available due to copyright.
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    Speech feature recognition by profoundly deaf children using the University of Melbourne multichannel electrotactile aid [Abstract]
    Alcantara, Joseph I. ; Whitford, Lesley A. ; Blamey, Peter J. ; Cowan, Robert S. C. ; Clark, Graeme M. ( 1989)
    Abstract not available due to copyright.
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    Preliminary evaluation of a wearable multichannel electrotactile speech processor [Abstract]
    Cowan, R. S. C. ; Blamey, P. J. ; Alcantara, J. I. ; Whitford, L. W. ; Clark, Graeme M. ( 1988)
    Speech discrimination testing, using both open-and closed-set materials was carried out with four severely-to-profoundly hearing impaired adults. and seven normally hearing subjects, to assess performance of a wearable eight-channel electrotactile aid (Tickle Talker). The device consisted of a handset composed of nine electrodes, a stimulator-unit, and a speech processor and input microphone. Eight small electrodes were located over the digital nerve bundles on each side of the four fingers of one hand, and a larger common electrode was placed on the wrist. Subjects perceived eight separate channels of information, each corresponding to a stimulus on one side of one finger. The speech processor provided estimates of second formant frequency, fundamental frequency and amplitude of the speech waveform. These features were coded as electrode position, pulse rate and pulse width respectively. This processing strategy (FOF2AO) is similar to that used in an earlier model of the Cochlear Pty. Ltd. cochlear implant.
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    Speech perception with cochlear implants and tactile aids [Abstract]
    Blamey, P. J. ; Clark, Graeme M. ; Dowell, R. C. ( 1988)
    Abstract not available due to copyright.
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    Evaluation of training strategies with an electrotactile speech processor [Abstract]
    Alcantara, J. I. ; Cowan, R. S. ; Blamey, P. J. ; Whitford, L. W. ; Clark, Graeme M. ( 1988)
    During 1986, seven normally-hearing subjects were trained in the use of an electrotactile speech processor ("Tickle Talker"). Two training methods were used: (a) a combined strategy. in which a variety of training materials ranging from analytic to synthetic level were employed; and (b) a synthetic alone training strategy, in which only synthetic level training materials were used. All seven subjects received 70 hours of training, 35 hours in each training strategy. Subjects were evaluated in the tactile-lipreading (TL) and lipreading alone (L) conditions at: (I) 0 hours training; (2) 35 hours training; and (3) after 70 hours of training. An evaluation test battery was constructed which contained both closed-set and open-set materials. Results indicated differences in performance on the evaluation tests which were dependent upon the training strategy. The differences in performance were greater in some evaluation tests than others. Subsequently; seven severe-profoundly hearing-impaired children (aged 7-11) have been fitted with the Tickle Talker and are presently participating in an ongoing training programme. Evaluation of their performance will help to assess the suitability of the device for young children.
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    A clinical protocol for multiple electrode cochlear implants in children [Abstract]
    Dowell, R. C. ; Busby, P.A. ; Roberts, S. A. ; Clark, Graeme M. ; Nienhuys, T. G. ; Blamey, P. J. ; Tong, Y. C. ( 1986)
    A clinical protocol for an experimental study to evaluate the speech perception and production, and communication skills using the multiple electrode cochlear implant in pre-adolescent children has been developed. A single-subject time-series design has been adopted to regularly assess these abilities. During the pre-operative stage the subject's current hearing aids or tactile device are used, and for the post-operative stage the Nucleus multiple electrode intracochlear implant. Training is provided in both stages of the study. Also included in the pre-operative stage are the audiological and medical evaluations to determine whether the subject meets the selection criteria. Speech perception and production, and communication skills are assessed from a large selection of language and developmental-age appropriate materials. Psychophysical studies are also undertaken to measure the subject's abilities to discriminate simple stimuli differing in electrical parameter values.