Comparison of Procedures for Obtaining Thresholds and Maximum Acceptable Loudness Levels With the Nucleus Cochlear Implant System Two stimulus paradigms and two presentation methods were combined to form three procedures (keyboard, knob, and ascending loudness judgments with knob [ALJK]) to obtain detection thresholds and maximum acceptable loudness tevels (MALs) from 11 adults with the Nucleus cochlear implant. Thresholds at which subjects correctly counted the number of stimulus ... Research Article
Research Article  |   June 01, 1995
Comparison of Procedures for Obtaining Thresholds and Maximum Acceptable Loudness Levels With the Nucleus Cochlear Implant System
 
Author Affiliations & Notes
  • Margaret W. Skinner
    Washington University School of Medicine St. Louis, MO
  • Laura K. Holden
    Washington University School of Medicine St. Louis, MO
  • Timothy A. Holden
    Washington University School of Medicine St. Louis, MO
  • Marilyn E. Demorest
    University of Maryland Baltimore County
  • Contact author: Margaret W. Skinner, PhD, Dept. of Otolaryngology - Head & Neck Surgery, Washington University School of Medicine, 517 So. Euclid Avenue, Campus Box 8115, St. Louis, MO 63110.
    Contact author: Margaret W. Skinner, PhD, Dept. of Otolaryngology - Head & Neck Surgery, Washington University School of Medicine, 517 So. Euclid Avenue, Campus Box 8115, St. Louis, MO 63110.×
Article Information
Hearing & Speech Perception / Acoustics / Hearing Aids, Cochlear Implants & Assistive Technology / Hearing / Research Articles
Research Article   |   June 01, 1995
Comparison of Procedures for Obtaining Thresholds and Maximum Acceptable Loudness Levels With the Nucleus Cochlear Implant System
Journal of Speech, Language, and Hearing Research, June 1995, Vol. 38, 677-689. doi:10.1044/jshr.3803.677
History: Received November 4, 1993 , Accepted January 6, 1995
 
Journal of Speech, Language, and Hearing Research, June 1995, Vol. 38, 677-689. doi:10.1044/jshr.3803.677
History: Received November 4, 1993; Accepted January 6, 1995

Two stimulus paradigms and two presentation methods were combined to form three procedures (keyboard, knob, and ascending loudness judgments with knob [ALJK]) to obtain detection thresholds and maximum acceptable loudness tevels (MALs) from 11 adults with the Nucleus cochlear implant. Thresholds at which subjects correctly counted the number of stimulus bursts also were obtained. Keyboard detection thresholds were higher (Scheffé, p = .01) than knob and ALJK detection thresholds. Counted thresholds were obtained most efficiently by using keyboard detection thresholds as the initial level for testing. Keyboard MALs were highest, knob MALs intermediate, and AUK MALs lowest (Scheffé, p = .001). MALs were obtained most efficiently with the ALJK procedure. Implications of these results for clinical practice are discussed.

Acknowledgments
We are grateful to our 11 subjects who have contributed so much to this research. We are also grateful to Susan Binzer, Paul Kileny, Charissa Lansing, and three anonymous reviewers for critical comments on earlier drafts of this paper. This research was supported by grant R01-DC00581 from the National Institute on Deafness and Other Communication Disorders.
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