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Preliminary experience with neural response telemetry in the nucleus CI24M cochlear implant
Journal article   Peer reviewed

Preliminary experience with neural response telemetry in the nucleus CI24M cochlear implant

C J Brown, P J Abbas and B J Gantz
The American journal of otology (New York, N.Y.), Vol.19(3), pp.320-327
05/1998
PMID: 9596182

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Abstract

This study aimed to compare recordings of the electrically evoked whole nerve action potential (EAP) made using the reverse telemetry system of the Nucleus CI24M device with those recorded from individuals who use the Ineraid cochlear implant system. Data were collected in a prospective fashion from Nucleus CI24M cochlear implant users and compared with retrospective data collected from patients who use the Ineraid device. All data were collected at the Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics. Data are reported from 8 patients who use the Nucleus CI24M cochlear implant and 20 patients who use the Ineraid cochlear implant system. The interventions described in this study were diagnostic in nature. EAP growth and refractory recovery data are reported. EAP thresholds recorded from patients who use the Nucleus CI24M device also are compared with behavioral thresholds for the stimulus used to evoke the EAP as well as the stimulation levels needed to program the speech processor. EAP morphology, growth, and refractory recovery functions recorded using the Nucleus CI24M reverse telemetry system compared favorably with similar measures recorded from Ineraid cochlear implant users. Reasonable EAP responses can be recorded using the Nucleus CI24M device. More data are needed to determine whether the information about neural responsiveness available with this device will be clinically useful.
Prospective Studies Telemetry - methods Humans Vestibulocochlear Nerve - physiology Cochlear Implantation - instrumentation Speech Reception Threshold Test Deafness - surgery Equipment Design Speech Perception - physiology Electric Stimulation - instrumentation Evoked Potentials, Auditory

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