By Fan-Gang Zeng (auth.), Fan-Gang Zeng, Arthur N. Popper, Richard R. Fay (eds.)
Cochlear implants have instigated a well-liked yet arguable revolution within the therapy of deafness. This publication discusses the physiological bases of utilizing synthetic units to electrically stimulate the auditory approach to interpret sounds. because the first profitable machine to revive neural functionality, the cochlear implant has served as a version for examine in neuroscience and biomedical engineering. Implants and different auditory prostheses are mentioned within the context of old remedy, engineering, psychophysics, and medical matters in addition to their implications for speech, cognition, habit, and the long term results on recipients
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Additional resources for Cochlear Implants: Auditory Prostheses and Electric Hearing
2000; Mason et al. 2001; Franck 2002; Gordon et al. 2002; Seyle and Brown 2002). S. Wilson Biphasic Current Pulse + Forward Telemetry Skin lntracochlear Eieeiredes Computer Speech Processor Interface Transmitting Coil Receiving Coil Interna! 3. Schematic diagram of the system used for recording intracochlear evoked potentials in the CI24M device. EAP: Electrically evoked whole nerve Action Potential. S. ) FIGURE A capability for recording intracochlear evoked potentials also has been included in the new Clarion implant system (Frijns et al.
Knowledge of the factors should help in the design of better implant systems that take these factors into account and minimize or eliminate their deleterious effects for patients who otherwise would have relatively poor outcomes. S. Wilson values. , Wilson et al. 1995; Loizou et al. 2000). Although predetermined values for some parameters may be appropriate for virtually all patients, the values of other parameters should be varied over certain ranges to optimize performance for individuals. 3 Strategy Implementations The performance of a processing strategy also can be affected by the quality of its implementation.
The data sent from the implanted components to the external components can include: • information about the status of the receiver/stimulator, such as measures of critical voltages • impedances of the implanted electrodes • voltages at unstimulated electrodes • neural evoked potentials, as recorded using unstimulated electrodes Rates of transmission required for the first three measures are relatively low. , a resolution of 12 bits or higher for the analog-ta-digital converter), and rapid recovery of the recording amplifiers from the saturation produced by the presentation of stimulus pulses (van den Honert et al.
Cochlear Implants: Auditory Prostheses and Electric Hearing by Fan-Gang Zeng (auth.), Fan-Gang Zeng, Arthur N. Popper, Richard R. Fay (eds.)