Post-operative Stapedius Reflex Tests with Simultaneous Loudness Scaling in Patients Supplied with Cochlear Implants

Stephan, K.; Welzl-Müller, K

doi:10.3109/00206090009073049

Cited by 64 publications

(50 citation statements)

References 9 publications

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“…It employs the Continuous Interleaved Sampling (CIS) strategy as developed by Wilson et al (1995), with a pulse rate typically set to about 1500 pulses per second on each electrode. Recordings of SRs using this device have been reported by Stephan and Welzl-Muller (2000) in a small group of six subjects, one using the COMBI 40+ implant and five using the original eight-channel COMBI 40 device. These authors examined loudness growth functions of behavioural percepts and SR magnitude and demonstrated a strong correlation between the two measures.…”

Section: Introductionmentioning

confidence: 99%

Investigations into electrically evoked stapedius reflex measures and subjective loudness percepts in the MED-EL COMBI 40+ cochlear implant

Brickley¹,

Boyd

Wyllie

et al. 2005

Cochlear Implants International

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For several years there has been interest in using objective measures to set channel-specific upper programming limits when programming the speech processor of cochlear implant users. The present study aims to add to previous reports by examining correlations between electrically evoked stapedius reflex threshold (ESRT) and a range of psychophysical loudness estimates in a group of 22 adult users of the MED-EL COMBI 40+ system. Thirteen of the 15 subjects (87%) had recordable stapedius reflexes. Psychophysical measures of threshold, maximum comfort level (MCL) and maximum acceptable loudness (MAL) were recorded. Results showed that mean ESRT was closest to the MCL using 500 ms burst ('MCL500'), with MCL50 (MCL using 50 ms burst) and MAL500 some 2dB and MAL50 3dB higher. Correlations between ESRT and the behavioural loudness judgements were highest for MCL500 (R = 0.69, p < 0.001) and slightly less for MAL500. These results confirm the ease of measuring ESRT in a clinical setting and that a high level of confidence can be placed on the use of these measures for setting processor maps in the absence of behavioural data.

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Section: Introductionmentioning

confidence: 99%

Investigations into electrically evoked stapedius reflex measures and subjective loudness percepts in the MED-EL COMBI 40+ cochlear implant

Brickley¹,

Boyd

Wyllie

et al. 2005

Cochlear Implants International

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show abstract

“…Although a very good correlation between ESRT and C-values used in programming has been reported by Stephan and Welzl-Müller [2000] in six patients with Medel implants (r = 0.92), we did not demonstrate similar findings in our study [Müller-Deile, 2009] of 18 postlingually deafened adults who were experienced Advanced Bionics Comparison of the speech intelligibility in patients fitted with psychoacoustic procedures for T-and C-values (traditional, n = 160 patients) and patients fitted with the TAutoNRT-based procedure (NRT, n = 111). Freiburg monosyllables in quiet at 70 and 60 dBSPL.…”

Section: Results For Implanted Malformation Cases CImentioning

confidence: 99%

“…Procedures: The thresholds of the stapedius reflex excited via electrical stimulation of the auditory nerve (ESRT) [Stephan and Welzl-Müller, 2000], as well as the thresholds of electrically evoked auditory brainstem responses [Van den Borne et al, 1994] and electrically evoked compound action potentials (ECAP) [Cafarelli Dees et al, 2005] have been reported to be estimators for T-and C-levels. The following describes some of the research and clinical application of these methods in more detail.…”

Section: Results For Implanted Malformation Cases CImentioning

confidence: 99%

Early Intervention for Hearing Impaired Children. Istanbul, Turkey, May 21-22, 2013: Abstracts

2013

Audiol Neurotol

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“…Stephan and Welzl-Müller [7] investigated the eSR threshold and the MCL recorded in units of current in 5 adult users of the Med-El Combi 40 system. A high r value of 0.92 was found, pointing to the usefulness of the eSR threshold in determining MCL levels.…”

Section: Discussionmentioning

confidence: 99%

Evoked Stapedius Reflex and Compound Action Potential Thresholds versus Most Comfortable Loudness Level: Assessment of Their Relation for Charge-Based Fitting Strategies in Implant Users

Walkowiak

Lorens

Polák

et al. 2011

ORL

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Aim: The main goal of the present study was to assess the feasibility of using evoked stapedius reflex (eSR) and evoked compound action potential (eCAP) thresholds to create speech processor programs for children using Med-El Maestro software. The secondary goals were (1) to compare the eSR and eCAP thresholds recorded using charge units in experienced adults fitted with Med-El Pulsar CI100 cochlear implants with most comfortable loudness levels (MCLs) obtained for the apical, medial and basal electrodes, and (2) to compare eSR and eCAP thresholds for the apical, medial and basal electrodes between adults and children. Methods: Fourteen children and 16 adults participated in the study. eSR and eCAP thresholds were measured in both groups using the auditory nerve response telemetry algorithm, with MCL being behaviourally measured only in the adult group. Results: In the adult population, the correlation between eSR threshold and MCL was better for apical, medial and basal electrodes than that between eCAP threshold and MCL. There was no significant difference in the means obtained for eCAP and eSR thresholds in children and adults for any of the electrodes tested. This finding suggests that in children, the correlations between eCAP thresholds and MCL values, and those between eSR thresholds and MCL values are not lower than those generally found in adults. Conclusions: Although the eSR threshold is a better predictor of MCL values, both eSR and eCAP thresholds can be useful tools for assisting with map creation for children.

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Post-operative Stapedius Reflex Tests with Simultaneous Loudness Scaling in Patients Supplied with Cochlear Implants

Cited by 64 publications

References 9 publications

Investigations into electrically evoked stapedius reflex measures and subjective loudness percepts in the MED-EL COMBI 40+ cochlear implant

Investigations into electrically evoked stapedius reflex measures and subjective loudness percepts in the MED-EL COMBI 40+ cochlear implant

Early Intervention for Hearing Impaired Children. Istanbul, Turkey, May 21-22, 2013: Abstracts

Evoked Stapedius Reflex and Compound Action Potential Thresholds versus Most Comfortable Loudness Level: Assessment of Their Relation for Charge-Based Fitting Strategies in Implant Users

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