Assessing hearing by measuring heartbeat: The effect of sound level

PloS One
Mehrnaz ShoushtarianColette McKay

Abstract

Functional near-infrared spectroscopy (fNIRS) is a non-invasive brain imaging technique that measures changes in oxygenated and de-oxygenated hemoglobin concentration and can provide a measure of brain activity. In addition to neural activity, fNIRS signals contain components that can be used to extract physiological information such as cardiac measures. Previous studies have shown changes in cardiac activity in response to different sounds. This study investigated whether cardiac responses collected using fNIRS differ for different loudness of sounds. fNIRS data were collected from 28 normal hearing participants. Cardiac response measures evoked by broadband, amplitude-modulated sounds were extracted for four sound intensities ranging from near-threshold to comfortably loud levels (15, 40, 65 and 90 dB Sound Pressure Level (SPL)). Following onset of the noise stimulus, heart rate initially decreased for sounds of 15 and 40 dB SPL, reaching a significantly lower rate at 15 dB SPL. For sounds at 65 and 90 dB SPL, increases in heart rate were seen. To quantify the timing of significant changes, inter-beat intervals were assessed. For sounds at 40 dB SPL, an immediate significant change in the first two inter-beat intervals follow...Continue Reading

References

May 1, 1966·Psychological Bulletin·F K Graham, R K Clifton
Nov 1, 1969·Psychophysiology·D B Smith, P J Strawbridge
Jan 1, 1969·Psychophysiology·R RoesslerN R Burch
Jan 1, 1968·Psychophysiology·J Germana, S B Klein
Dec 1, 1984·Journal of Experimental Child Psychology·B A Morrongiello, R K Clifton
Oct 1, 1962·Journal of Comparative and Physiological Psychology·P J LANG, M HNATIOW
Jan 1, 1963·Annual Review of Physiology·E N SOKOLOV
Oct 1, 1963·Electroencephalography and Clinical Neurophysiology·S L VISSER
Sep 1, 1964·Journal of Experimental Psychology·D M WOOD, P A OBRIST
Oct 1, 1964·Psychophysiology·D G MCDONALDD J HORD
Jul 1, 1965·The Journal of Pediatrics·M S MCLELLAN, A STRUCK
Apr 6, 2006·The Journal of the Acoustical Society of America·Sygal AmitayDavid R Moore
Jan 26, 2012·Physiological Measurement·Behnam Molavi, Guy A Dumont
Jun 28, 2014·Journal of Biomedical Optics·Katherine L PerdueCharles A Nelson
Apr 11, 2018·Journal of the Association for Research in Otolaryngology : JARO·Stefan WederColette McKay

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