Reliability of categorical loudness scaling in the electrical domain.
Objective: In categorical loudness scaling (CLS), subjects rate the perceived loudness on a categorical scale with alternatives. ISO 16832 describes an internationally standardized CLS procedure for the acoustical domain. This study focuses on the reproducibility of CLS following the recommendations...
| Published in: | International Journal of Audiology Vol. 53; no. 6; pp. 409 - 418 |
|---|---|
| Main Authors: | , , , |
| Format: | equations & formulas research tables/charts Journal Article |
| Published: |
Taylor & Francis Ltd
Jun2014
|
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103944542&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103944542 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Jun2014 vid: 53 iid: 6 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 103944542 95997587 10.3109/14992027.2013.879338 NLM24720542 103944542 ppf: 409 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Reliability of categorical loudness scaling in the electrical domain. aug: au: Theelen - van den Hoek, Femke L. Boymans, Monique Stainsby, Thomas Dreschler, Wouter A. affil: Department of Clinical and Experimental Audiology, Academic Medical Center Amsterdam, Meibergdreef, Amsterdam, The Netherlands sug: subj: Cochlear Implant Loudness Perception Reproducibility of Results Human Repeated Measures ab: Objective: In categorical loudness scaling (CLS), subjects rate the perceived loudness on a categorical scale with alternatives. ISO 16832 describes an internationally standardized CLS procedure for the acoustical domain. This study focuses on the reproducibility of CLS following the recommendations of ISO 16832 using electrical stimuli presented to cochlear implant (CI) users. Design: Repeated CLS measurements were done using single-electrode stimuli at four electrode positions. Loudness growth functions (LGFs) described loudness as a function of level (μA). LGF shapes were characterized with an exponential b parameter. The reproducibility of the b parameter and inter-session intra-subject differences in percentage dynamic range (DR) between 'Very Soft' and 'Loud - Very Loud' levels were analysed. Study sample: Ten CI users. Results: Inter-session differences did not significantly differ between loudness categories or electrode positions. Across loudness categories the standard deviation of inter-session differences equalled 7.2%DR. The reproducibility of LGF shapes was moderate (r = 0.63). The LGFs of 43% of the measured electrodes significantly deviated from linear (nonzero b parameter). Conclusions: The reproducibility was comparable to the reproducibility for acoustical stimulation in normal-hearing and hearing-impaired listeners. CLS data for electrical stimuli are preferably fitted with a model that is flexible in describing LGF shapes. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|