scholarly journals Pitch-ranking of electric and acoustic stimuli by cochlear implant users with the HiRes and Fidelity120 speech processing strategies

2010 ◽  
Author(s):  
Benjamin A. Russell ◽  
Gail Donaldson
Keyword(s):  
Cochlear Implant ◽  
Speech Processing ◽  
Acoustic Stimuli ◽  
Processing Strategies

An Introduction to Cochlear Implant Technology, Activation, and Programming

2002 ◽  
Vol 33 (3) ◽  
pp. 153-161 ◽  
Author(s):  
Jan A. Moore ◽  
Holly F. B. Teagle
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Academic Development ◽  
School Age Children ◽  
School Age ◽  
Technology In The Classroom ◽  
Processing Strategies ◽  
Cochlear Implant Surgery

Over the last decade, cochlear implantation has become an increasingly viable alternative for the treatment of profound sensorineural hearing loss in children. Although speech and hearing professionals play an important role in the communicative, social, and academic development of children with cochlear implants, many may be unfamiliar with recent advances in implant technology. This article provides an overview of the components of cochlear implant systems and the speech processing strategies that are currently being used by toddlers, preschoolers, and school-age children. A brief description of cochlear implant surgery and the procedures for programming these devices are also included. Finally, information regarding the use of assistive listening technology in the classroom is presented.

Speech-Processing Strategies and Their Implementation

1987 ◽  
Vol 96 (1_suppl) ◽  
pp. 71-74 ◽  
Author(s):  
P. Seligman
Keyword(s):  
Cochlear Implant ◽  
Pulse Rate ◽  
Speech Processing ◽  
Temporal Coding ◽  
Electrode Position ◽  
Processing Strategy ◽  
Limited Information ◽  
Processing Strategies ◽  
Speech Information

Since 1979, the Australian speech-processing strategy has been based on the presentation of an estimate of F2 coded by electrode position and F0 coded by pulse rate. Although providing limited information, this strategy has produced good results with significant hearing-alone performance. This paper describes a number of strategies that provide further speech information in an attempt to increase hearing-alone performance to a level where the cochlear implant is able to operate in its own right rather than as an adjunct to lipreading. The strategies are all based on the addition of F1 to the existing strategy. Both electrode and temporal coding of F1 is described, and the performance and percepts produced are discussed. Amplitudes of the two formants must be carefully controlled to avoid masking. The implications of the strategies on the design of hardware are described.

scholarly journals Comparison of Two Cochlear Implant Speech-Processing Strategies

1984 ◽  
Vol 93 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Graeme M. Clark ◽  
Yit Chow Tong ◽  
Richard C. Dowell
Keyword(s):  
Cochlear Implant ◽  
Speech Processing ◽  
Processing Strategies

Vestibulo-Ocular and Vestibulospinal Function before and after Cochlear Implant Surgery

1987 ◽  
Vol 96 (1_suppl) ◽  
pp. 106-109 ◽  
Author(s):  
F. O. Black ◽  
D. J. Lilly ◽  
R. J. Peterka ◽  
L. P. Fowler ◽  
F. B. Simmons
Keyword(s):  
Cochlear Implant ◽  
Speech Processing ◽  
Stimulus Frequency ◽  
Vestibular Function ◽  
High Amplitude ◽  
Stimulus Amplitude ◽  
Processing Strategies ◽  
Cochlear Implant Surgery ◽  
Before And After ◽  
Vestibular Reflex

Vestibular function in cochlear implant candidates varies from normal to total absence of function. In patients with intact vestibular function preoperatively, invasion of the otic capsule places residual vestibular function at risk. Speech-processing strategies that result in large amplitude electrical transients or strategies that employ high amplitude broad frequency carrier signals have the potential for disrupting vestibular function. Five patients were tested with and without electrical stimulation via cochlear electrodes. Two patients experienced subjective vestibular effects that were quickly resolved. No long-term vestibular effects were noted for the two types of second generation cochlear implants evaluated. Histopathological findings from another patient, who had electrically generated vestibular reflex responses to intramodiolar electrodes, indicated that responses elicited were a function of several variables including electrode location, stimulus intensity, stimulus amplitude, and stimulus frequency. Differential auditory, vestibulocolic, and vestibulospinal reflexes were demonstrated from the same electrode as a function of stimulus amplitude, frequency, and duration.

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