Pure-Tone-Spondee Threshold Relationships in Functional Hearing Loss: A Test of Loudness Contribution.
| Autor: | Schlauch RS; University of Minnesota, Minneapolis., Han HJ; University of Minnesota, Minneapolis., Yu TJ; University of Minnesota, Minneapolis., Carney E; University of Minnesota, Minneapolis. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of speech, language, and hearing research : JSLHR [J Speech Lang Hear Res] 2017 Jan 01; Vol. 60 (1), pp. 136-143. |
| DOI: | 10.1044/2016_JSLHR-H-15-0330 |
| Abstrakt: | Purpose: The purpose of this article is to examine explanations for pure-tone average-spondee threshold differences in functional hearing loss. Method: Loudness magnitude estimation functions were obtained from 24 participants for pure tones (0.5 and 1.0 kHz), vowels, spondees, and speech-shaped noise as a function of level (20-90 dB SPL). Participants listened monaurally through earphones. Loudness predictions were obtained for the same stimuli by using a computational, dynamic loudness model. Results: When evaluated at the same SPL, speech-shaped noise was judged louder than vowels/spondees, which were judged louder than tones. Equal-loudness levels were inferred from fitted loudness functions for the group. For the clinical application, the 2.1-dB difference between spondees and tones at equal loudness became a 12.1-dB difference when the stimuli were converted from SPL to HL. Conclusions: Nearly all of the pure-tone average-spondee threshold differences in functional hearing loss are attributable to references for calibration for 0 dB HL for tones and speech, which are based on detection and recognition, respectively. The recognition threshold for spondees is roughly 9 dB higher than the speech detection threshold; persons feigning a loss, who base loss magnitude on loudness, do not consider this difference. Furthermore, the dynamic loudness model was more accurate than the static model. |
| Databáze: | MEDLINE |
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