Source:http://linkedlifedata.com/resource/pubmed/id/16583899
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
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| pubmed:dateCreated |
2006-4-4
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| pubmed:abstractText |
The primary goal of this study was to examine electrophysiologic measures of channel interaction, electrode pitch discrimination ability using a pitch-ranking task, and behavioral threshold levels in individuals implanted with a straight electrode array versus a perimodiolar array. It was hypothesized that perimodiolar arrays should yield lower thresholds, less channel interaction as measured with the electrically evoked compound action potential (ECAP), and better electrode pitch-ranking ability. Results from ten adult Nucleus 24 recipients (N=5 straight array, N=5 perimodiolar Contour array) showed no significant difference in threshold between the two electrode designs; however, there was significantly better electrode pitch-ranking ability and less channel interaction as measured with the ECAP for perimodiolar electrodes. Additionally, there was a significant positive correlation between behavioral threshold and width of the ECAP interaction function for Contour group data. There was no significant correlation between behavioral threshold and electrode pitch-ranking ability. These data suggest that electrode design and/or perimodiolar position may reduce physiologic channel interaction in the cochlea and improve electrode pitch discrimination ability; however, this positive finding did not translate into significantly better speech perception ability for Contour subjects.
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| pubmed:grant | |
| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:citationSubset |
IM
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| pubmed:status |
MEDLINE
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| pubmed:month |
Mar
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| pubmed:issn |
0001-4966
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
119
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
1538-47
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| pubmed:dateRevised |
2007-12-3
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| pubmed:meshHeading |
pubmed-meshheading:16583899-Action Potentials,
pubmed-meshheading:16583899-Adult,
pubmed-meshheading:16583899-Aged,
pubmed-meshheading:16583899-Analysis of Variance,
pubmed-meshheading:16583899-Auditory Threshold,
pubmed-meshheading:16583899-Cochlea,
pubmed-meshheading:16583899-Cochlear Implants,
pubmed-meshheading:16583899-Deafness,
pubmed-meshheading:16583899-Electric Stimulation,
pubmed-meshheading:16583899-Electrodes, Implanted,
pubmed-meshheading:16583899-Evoked Potentials, Auditory,
pubmed-meshheading:16583899-Humans,
pubmed-meshheading:16583899-Middle Aged,
pubmed-meshheading:16583899-Perceptual Masking,
pubmed-meshheading:16583899-Pitch Discrimination,
pubmed-meshheading:16583899-Prosthesis Design,
pubmed-meshheading:16583899-Psychophysics,
pubmed-meshheading:16583899-Signal Processing, Computer-Assisted
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| pubmed:year |
2006
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| pubmed:articleTitle |
Electrophysiologic channel interaction, electrode pitch ranking, and behavioral threshold in straight versus perimodiolar cochlear implant electrode arrays.
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| pubmed:affiliation |
Department of Otolaryngology-Head and Neck Surgery, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242, USA. hughesml@boystown.org
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| pubmed:publicationType |
Journal Article,
Research Support, N.I.H., Extramural
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