Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Baiduc, Rachael R.; Lee, Jungmee; Dhar, Sumitrajit

doi:10.1121/1.4840775

Cited by 20 publications

(34 citation statements)

References 58 publications

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“…Since their discovery in the late 1970s by David Kemp (1978), they have been used in the clinic to evaluate the health of outer hair cells (OHC) and in research to gain scientific insight into cochlear mechanics. Behaviorally they have been shown to predict the pattern of pure-tone quiet thresholds (Long and Tubis 1988;Lee and Long 2012;Dewey and Dhar 2014), auditory frequency selectivity, (Baiduc et al 2014), and loudness perception ).…”

Section: Introductionmentioning

confidence: 99%

Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing

Dijk¹,

Başkent²,

Gaudrain

et al. 2016

Advances in Experimental Medicine and Biology

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Section: Introductionmentioning

confidence: 99%

Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing

Dijk¹,

Başkent²,

Gaudrain

et al. 2016

Advances in Experimental Medicine and Biology

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“…Martin et al, 1988; Baiduc et al, 2014). We screened all subjects for the presence of SOAEs but none were detected (see Charaziak et al, 2013 for the measurement procedures).…”

Section: Methodsmentioning

confidence: 99%

Exploration of stimulus-frequency otoacoustic emission suppression tuning in hearing-impaired listeners

Charaziak

Souza

Siegel

2014

International Journal of Audiology

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Objective Otoacoustic emissions (OAEs) can provide useful measures of tuning of auditory filters. We previously established that stimulus-frequency (SF) OAE suppression tuning curves (STCs) reflect major features of behavioral tuning (psychophysical tuning curves, PTCs) in normally-hearing listeners. Here, we aim to evaluate whether SFOAE STCs reflect changes in PTC tuning in cases of abnormal hearing. Design PTCs and SFOAE STCs were obtained at 1 kHz and/or 4 kHz probe frequencies. For exploratory purposes, we collected SFOAEs measured across a wide frequency range and contrasted them to commonly measured distortion product (DP) OAEs. Study sample Thirteen listeners with varying degrees of sensorineural hearing loss. Results Except for a few listeners with the most hearing loss, the listeners had normal/nearly normal PTCs. However, attempts to record SFOAE STCs in hearing-impaired listeners were challenging and sometimes unsuccessful due to the high level of noise at the SFOAE frequency, which is not a factor for DPOAEs. In cases of successful measurements of SFOAE STCs there was a large variability in agreement between SFOAE STC and PTC tuning. Conclusions These results indicate that SFOAE STCs cannot substitute for PTCs in cases of abnormal hearing, at least with the paradigm adopted in this study.

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“…Stimuli of greater sound pressure level and frequency nearer the emission frequency increased the f SOAE shift up to several hundred Hz (K€ oppl and Manley, 1994;Manley et al, 1996;Manley, 2004). Human SOAEs can also be both pushed away from or pulled towards an external stimulus (Long, 1998;Baiduc et al, 2013;Manley and van Dijk, 2016). This SOAE shift is, however, very much smaller in humans than in lizards.…”

Section: Tuning Curve Tip and Frequency Pushing And Pullingmentioning

confidence: 99%

Suppression tuning of spontaneous otoacoustic emissions in the barn owl (Tyto alba)

et al. 2020

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Spontaneous otoacoustic emissions (SOAEs) have been observed in a variety of different vertebrates, including humans and barn owls (Tyto alba). The underlying mechanisms producing the SOAEs and the meaning of their characteristics regarding the frequency selectivity of an individual and species are, however, still under debate. In the present study, we measured SOAE spectra in lightly anesthetized barn owls and suppressed their amplitudes by presenting pure tones at different frequencies and sound levels. Suppression effects were quantified by deriving suppression tuning curves (STCs) with a criterion of 2 dB suppression. SOAEs were found in 100% of ears (n ¼ 14), with an average of 12.7 SOAEs per ear. Across the whole SOAE frequency range of 3.4e10.2 kHz, the distances between neighboring SOAEs were relatively uniform, with a median distance of 430 Hz. The majority (87.6%) of SOAEs were recorded at frequencies that fall within the barn owl's auditory fovea (5e10 kHz). The STCs were V-shaped and sharply tuned, similar to STCs from humans and other species. Between 5 and 10 kHz, the median Q 10dB value of STC was 4.87 and was thus lower than that of owl single-unit neural data. There was no evidence for secondary STC side lobes, as seen in humans. The best thresholds of the STCs varied from 7.0 to 57.5 dB SPL and correlated with SOAE level, such that smaller SOAEs tended to require a higher sound level to be suppressed. While similar, the frequency-threshold curves of auditory-nerve fibers and STCs of SOAEs differ in some respects in their tuning characteristics indicating that SOAE suppression tuning in the barn owl may not directly reflect neural tuning in primary auditory nerve fibers.

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Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Cited by 20 publications

References 58 publications

Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing

Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing

Exploration of stimulus-frequency otoacoustic emission suppression tuning in hearing-impaired listeners

Suppression tuning of spontaneous otoacoustic emissions in the barn owl (Tyto alba)

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