By Fan-Gang Zeng (auth.), Fan-Gang Zeng, Arthur N. Popper, Richard R. Fay (eds.)
Cochlear implants have instigated a favored yet debatable revolution within the remedy of deafness. This ebook discusses the physiological bases of utilizing man made units to electrically stimulate the auditory method 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 scientific matters in addition to their implications for speech, cognition, habit, and the long term results on recipients
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Additional info for Cochlear Implants: Auditory Prostheses and Electric Hearing
Data from Wilson et al. 85). 92 (Wilson et al. 1993). , Rubinstein et al. 1999a). The factors may be related to the condition of the auditory nerve (see Leake and Rebscher, Chapter 4), the integrity of the central auditory system (see Hartmann and Kral, Chapter 6), the cognitive abilities of a patient (see Pisoni and Cleary, Chapter 9), or some combination of these possibilities. 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.
In each of the studies the subjects have been asked to indicate their preference between the SAS and CIS strategies, or among the SAS, CIS, and PPS strategies. 3. They vary widely across studies. In the study of Battmer et al. (1999), approximately half of the subjects preferred SAS to CIS and also achieved scores with SAS that were comparable to the scores achieved by the other subjects with CIS. In the study of Osberger and Fisher (2000), less than 30% of the subjects preferred SAS, but some of those subjects had exceptionally high scores (on average, scores for the SAS and CIS groups were not different at the final, 6-month test interval).
2kHz) speech inputs. An input corresponding to a voiced speech sound ("aw") is shown in the left panel and an input corresponding to an unvoiced speech sound ("t") is shown in the right panel. The bottom panels show stimulus pulses produced by a CIS processor for these inputs. The numbers indicate the electrodes to which the stimuli are delivered. The lowest number corresponds to the apical-most electrode and the highest number to the basal-most electrode. The pulse amplitudes in the figure refiect the amplitudes of the envelope signals for each channel.