Journal article

Cortical fNIRS Responses Can Be Better Explained by Loudness Percept than Sound Intensity

Stefan Weder, Mehrnaz Shoushtarian, Virginia Olivares, Xin Zhou, Hamish Innes-Brown, Colette McKay

Ear & Hearing | LIPPINCOTT WILLIAMS & WILKINS | Published : 2020

Abstract

OBJECTIVES: Functional near-infrared spectroscopy (fNIRS) is a brain imaging technique particularly suitable for hearing studies. However, the nature of fNIRS responses to auditory stimuli presented at different stimulus intensities is not well understood. In this study, we investigated whether fNIRS response amplitude was better predicted by stimulus properties (intensity) or individually perceived attributes (loudness). DESIGN: Twenty-two young adults were included in this experimental study. Four different stimulus intensities of a broadband noise were used as stimuli. First, loudness estimates for each stimulus intensity were measured for each participant. Then, the 4 stimulation intensi..

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Grants

Awarded by Swiss National Science Foundation (SNSF)


Funding Acknowledgements

S.W. was funded by the Swiss National Science Foundation (SNSF), award number P2BSP3_161929. X.Z. was supported by a Melbourne University International PhD Scholarship. V.O. was supported by the Chilean National Commission for Scientific and Technological Research (CONICYT) scholarship and The University of Valparaiso, Chile. H.I.-B. was supported by a National Health and Medical Research Council early career fellowship. C.M. was supported by a Veski Fellowship.