Document Detail


Design of the cochlear prosthesis: effects of the flow of current in the implanted ear.
MedLine Citation:
PMID:  6769378     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
When structures within the temporal bone are stimulated electrically it is desirable to maximize the dynamic range of the stimulus. The maximum dynamic range of electrical stimulus seems to be found when the threshold of stimulation is minimum. The minimum threshold of stimulus is likely to be reached when the electrical current that flow through regions containing excitable cells is maximized. By implanting electrodes throughout the temporal bone, it is possible to apply electrical currents to the ear and to measure the distributions of current flowing within the ear. The results of these measurements demonstrate that when current flow is directed outside the scala tympani, lower thresholds can be obtained. Frequency dependence of the paths of current flow cannot be used to explain the frequency dependence of the frequency-threshold functions measured in animals.
Authors:
F A Spelman; B M Clopton; B E Pfingst; J M Miller
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of otology, rhinology & laryngology. Supplement     Volume:  89     ISSN:  0096-8056     ISO Abbreviation:  Ann Otol Rhinol Laryngol Suppl     Publication Date:    1980 Mar-Apr
Date Detail:
Created Date:  1980-07-28     Completed Date:  1980-07-28     Revised Date:  2008-02-21    
Medline Journal Info:
Nlm Unique ID:  1256156     Medline TA:  Ann Otol Rhinol Laryngol Suppl     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  8-10     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Auditory Threshold / physiology
Cochlear Implants*
Electric Stimulation*
Evoked Potentials, Auditory*
Guinea Pigs
Haplorhini
Prosthesis Design*
Temporal Bone / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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