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Spectrotemporal Modulation Sensitivity as a Predictor of Speech-Reception Performance in Noise With Hearing Aids
Walter Reed National Mil Medical Centre, MD 20889 USA.
Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Öron- näsa- och halskliniken US.
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.ORCID-id: 0000-0003-3350-8997
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2016 (engelsk)Inngår i: TRENDS IN HEARING, ISSN 2331-2165, Vol. 20, artikkel-id 2331216516670387Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The audiogram predicts amp;lt;30% of the variance in speech-reception thresholds (SRTs) for hearing-impaired (HI) listeners fitted with individualized frequency-dependent gain. The remaining variance could reflect suprathreshold distortion in the auditory pathways or nonauditory factors such as cognitive processing. The relationship between a measure of suprathreshold auditory function-spectrotemporal modulation (STM) sensitivity-and SRTs in noise was examined for 154 HI listeners fitted with individualized frequency-specific gain. SRTs were measured for 65-dB SPL sentences presented in speech-weighted noise or four-talker babble to an individually programmed master hearing aid, with the output of an ear-simulating coupler played through insert earphones. Modulation-depth detection thresholds were measured over headphones for STM (2cycles/octave density, 4-Hz rate) applied to an 85-dB SPL, 2-kHz lowpass-filtered pink-noise carrier. SRTs were correlated with both the high-frequency (2-6 kHz) pure-tone average (HFA; R-2 = .31) and STM sensitivity (R-2 = .28). Combined with the HFA, STM sensitivity significantly improved the SRT prediction (Delta R-2 = .13; total R-2 = .44). The remaining unaccounted variance might be attributable to variability in cognitive function and other dimensions of suprathreshold distortion. STM sensitivity was most critical in predicting SRTs for listenersamp;lt;65 years old or with HFA amp;lt;53 dB HL. Results are discussed in the context of previous work suggesting that STM sensitivity for low rates and low-frequency carriers is impaired by a reduced ability to use temporal fine-structure information to detect dynamic spectra. STM detection is a fast test of suprathreshold auditory function for frequencies amp;lt;2 kHz that complements the HFA to predict variability in hearing-aid outcomes for speech perception in noise.

sted, utgiver, år, opplag, sider
SAGE PUBLICATIONS INC , 2016. Vol. 20, artikkel-id 2331216516670387
Emneord [en]
hearing aids; amplitude modulation; cognitive processing; temporal fine structure; noise
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-133115DOI: 10.1177/2331216516670387ISI: 000388149600001PubMedID: 27815546OAI: oai:DiVA.org:liu-133115DiVA, id: diva2:1055267
Merknad

Funding Agencies|Linnaeus Centre HEAD excellence center grant from the Swedish Research Council; FORTE

Tilgjengelig fra: 2016-12-12 Laget: 2016-12-09 Sist oppdatert: 2016-12-29

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