Journal Mobile Options
Table of Contents
Vol. 9, No. 3, 2004
Issue release date: May–June 2004
Section title: Original Paper
Audiol Neurootol 2004;9:163–172
(DOI:10.1159/000077267)

Effects of Insertion Depth of Cochlear Implant Electrodes upon Speech Perception

Yukawa K.a,c · Cohen L.b · Blamey P.a · Pyman B.a · Tungvachirakul V.a · O’Leary S.a
aDepartment of Otolaryngology, University of Melbourne, Royal Victorian Eye and Ear Hospital, and bCRC for CochlearImplant and Hearing Aid Innovation, Melbourne, Australia; cHead and Neck Surgery, Department of Otolaryngology, Tokyo Medical University, Tokyo, Japan

Do you have an account?

Register and profit from personalized services (MyKarger) Login Information

Please create your User ID & Password





Contact Information









I have read the Karger Terms and Conditions and agree.

Register and profit from personalized services (MyKarger) Login Information

Please create your User ID & Password





Contact Information









I have read the Karger Terms and Conditions and agree.

To view the fulltext, please log in

To view the pdf, please log in

Buy

  • FullText & PDF
  • Unlimited re-access via MyKarger (new!)
  • Unrestricted printing, no saving restrictions for personal use
  • Reduced rates with a PPV account
read more

Direct: USD 38.00
Account: USD 26.50

Select

Rent/Cloud

  • Rent for 48h to view
  • Buy Cloud Access for unlimited viewing via different devices
  • Synchronizing in the ReadCube Cloud
  • Printing and saving restrictions apply

Rental: USD 8.50
Cloud: USD 20.00

Select

Subscribe

  • Access to all articles of the subscribed year(s) guaranteed for 5 years
  • Unlimited re-access via Subscriber Login or MyKarger
  • Unrestricted printing, no saving restrictions for personal use
read more

Subcription rates


Select


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 2/28/2003
Accepted: 11/20/2003
Published online: 4/15/2004
Issue release date: May–June 2004

Number of Print Pages: 10
Number of Figures: 6
Number of Tables: 3

ISSN: 1420-3030 (Print)
eISSN: 1421-9700 (Online)

For additional information: http://www.karger.com/AUD

Abstract

Objective: To investigate whether the insertion depth of a cochlear implant array affects postoperative speech perception. Design: The subjects were 48 postlingually deaf adults who received either the Nucleus 22 or the Nucleus 24 cochlear implant with a straight array. A postoperative radiograph of the cochlear electrode was used to estimate insertion depth, as either the angle of the electrode tip (angle) or the intracochlear length of the electrode (length). Other estimates of insertion depth included the numbers of active electrodes and channels used by the speech processor. Electrode depth, together with the duration of deafness, hearing aid usage, pre-operative speech perception score and pre-operative pure-tone averages were independent variables in a forward stepwise multiple regression analysis, where the dependent variables were postoperative CNC words and CNC phonemes. Results: Duration of deafness and insertion depth (angle, insertion length or active electrodes) were the predictive variables for CNC words or CNC phonemes. Angle was the best ‘depth-related’ predictor of postoperative speech perception. An even clearer relationship was found between CUNY sentences in noise and angle, in a subset of 26 patients. Conclusion: Depth of electrode insertion affects postoperative speech perception.

© 2004 S. Karger AG, Basel


  

Author Contacts

Stephen O’Leary
Department of Otolaryngology, University of Melbourne
Royal Victorian Eye and Ear Hospital, 32 Gisborne Street
Melbourne East, Vic. 3002 (Australia)
Tel. +61 3 9890 9910, Fax +61 3 9663 1958, E-Mail sjoleary@unimelb.edu.au

  

Article Information

Received: February 28, 2003
Accepted after revision: November 20, 2003
Number of Print Pages : 10
Number of Figures : 6, Number of Tables : 3, Number of References : 36

  

Publication Details

Audiology & Neuro-Otology (Basic Research and Clinical Applications)

Vol. 9, No. 3, Year 2004 (Cover Date: May-June 2004)

Journal Editor: Manfried Hoke, Münster, Germany
ISSN: 1420–3030 (print), 1421–9700 (Online)

For additional information: http://www.karger.com/aud


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 2/28/2003
Accepted: 11/20/2003
Published online: 4/15/2004
Issue release date: May–June 2004

Number of Print Pages: 10
Number of Figures: 6
Number of Tables: 3

ISSN: 1420-3030 (Print)
eISSN: 1421-9700 (Online)

For additional information: http://www.karger.com/AUD


Copyright / Drug Dosage

Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher or, in the case of photocopying, direct payment of a specified fee to the Copyright Clearance Center.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.