Clinical assessment of spectral modulation detection for adult cochlear implant recipients: a non-language based measure of performance outcomes

Document Type

Article

Abstract

OBJECTIVE: Spectral modulation detection (SMD) provides a psychoacoustic estimate of spectral resolution. The SMD threshold for an implanted ear is highly correlated with speech understanding and is thus a non-linguistic, psychoacoustic index of speech understanding. This measure, however, is time and equipment intensive and thus not practical for clinical use. Thus the purpose of the current study was to investigate the efficacy of a quick SMD task with the following three study aims: (1) to investigate the correlation between the long psychoacoustic, and quick SMD tasks, (2) to determine the test/retest variability of the quick SMD task, and (3) to evaluate the relationship between the quick SMD task and speech understanding. DESIGN: This study included a within-subjects, repeated-measures design. STUDY SAMPLE: Seventy-six adult cochlear implant recipients participated. RESULTS: The results were as follows: (1) there was a significant correlation between the long psychoacoustic, and quick SMD tasks, (2) the test-retest variability of the quick SMD task was highly significant and, (3) there was a significant positive correlation between the quick SMD task and monosyllabic word recognition. CONCLUSIONS: The results of this study represent the direct clinical translation of a research-proven task of SMD into a quick, clinically feasible format.

Medical Subject Headings

Acoustic Stimulation; Adult; Aged; Aged, 80 and over; Audiometry; Cochlear Implantation (instrumentation); Cochlear Implants; Comprehension; Correction of Hearing Impairment (instrumentation); Hearing Loss (diagnosis, psychology, rehabilitation); Humans; Middle Aged; Persons with Hearing Disabilities (psychology, rehabilitation); Predictive Value of Tests; Prosthesis Design; Psychoacoustics; Recognition, Psychology; Reproducibility of Results; Sound Spectrography; Speech Perception; Time Factors; Young Adult

Publication Date

3-1-2014

Publication Title

International journal of audiology

E-ISSN

1708-8186

Volume

53

Issue

3

First Page

159

Last Page

64

PubMed ID

24456178

Digital Object Identifier (DOI)

10.3109/14992027.2013.851800

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