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Pubmed for Handhelds

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  • Title: Electrical stimulation at the wrist as an aid for the profoundly deaf.
    Author: Dodgson GS, Brown BH, Freeston IL, Stevens JC.
    Journal: Clin Phys Physiol Meas; 1983 Nov; 4(4):403-16. PubMed ID: 6228371.
    Abstract:
    The development and evaluation of a sensory electrical substitution aid for the profoundly deaf is described. The aid is a small wrist-worn device which converts sound into an electrical stimulus at the wrist. The initial aim was to give profoundly deaf people useful information from ambient sounds. Evaluation of the Mark 1 aid on 15 hearing and five profoundly deaf people indicated that such a device might be of use to some deaf people. Investigation of the sensitivity of the peripheral nervous system to electrical pulse stimulation showed that information could be transmitted in a more efficient manner so a Mark 2 aid was developed which incorporated circuitry to transmit pitch information, potentially useful in lipreading. The Mark 2 aid was shown to give improved results over the Mark 1 aid in transmitting voice intonation, but gave no help in an isolated word lipreading test. A portable Mark 2 aid was developed to enable clinical trials to be carried out on profoundly deaf people.
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