Effects of Bone Oscillator Coupling Method, Placement Location, and Occlusion on Bone-Conduction Auditory Steady-State Responses in Infants

Small, Susan A.; Hatton, Jennifer L.; Stapells, David R.

doi:10.1097/01.aud.0000249787.97957.5b

Cited by 38 publications

(56 citation statements)

References 21 publications

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“…The results of the present study, in which 2.0-kHz tones were used (in order to avoid the complication of the occlusion effect in the occluded ears and of tactile sensation) with no difference in threshold, are thus in agreement with those of earlier reports with respect to the osseous sites [e.g. Small et al, 2007;Toll et al, 2011].…”

Section: Discussionsupporting

confidence: 81%

Thresholds to Soft Tissue Conduction Stimulation Compared to Bone Conduction Stimulation

Adelman

Sohmer²

2012

Audiol Neurotol

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This study was designed to compare the thresholds to a standard clinical bone vibrator applied to sites on the head over skull bone (bone conduction, BC) and to soft tissue sites on the head and neck (soft tissue conduction, STC) with static application forces of 100 and 500 g in order to assess the possibility that STC is actually a form of BC, since both are elicited by stimulation with the same bone vibrator. Thresholds to 2.0-kHz tones were assessed in dB hearing level settings of the audiometer in the BC stimulation mode. There was no difference in threshold between forces of 100 and 500 g when applied to the skull bone sites (e.g. mastoid, forehead). However, at soft tissue sites (e.g. below the ear lobe, under the chin, on the sterno-cleido-mastoid muscle), thresholds to 100 g were significantly higher (poorer) than those to 500 g. With the 500 g static force (and also with the 100 g force), the thresholds at the STC sites were higher (poorer) than those at the skull bone sites. These findings have implications for understanding BC and STC modes of auditory activation.

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Section: Discussionsupporting

confidence: 81%

Thresholds to Soft Tissue Conduction Stimulation Compared to Bone Conduction Stimulation

Adelman

Sohmer²

2012

Audiol Neurotol

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“…The implication appears to be that low frequency BC thresholds worsen, and high frequency BC thresholds improve, with maturation [13]. The second study assessed the effect of the bone-oscillator coupling method, location, and occlusion on BC ASSR in infants [14]. Results indicated that the coupling methods (elastic band vs. hand-held) do not render significantly different results.…”

Section: Introductionmentioning

confidence: 99%

“…Since the exact force of the headband was not measured, there may have been slight differences in exerted force across subjects. Coupling method, placement on temporal bone or mastoid, and the occlusion effect have not been found to exercise a significant effect on BC ASSR thresholds in infants [14]. The BC stimuli were calibrated in reference-equivalent threshold force levels (RETFLs) in dB re:1 mN corresponding to 0 dB HL for the mastoid [19], using a Larson Davis 824 sound level meter and artificial mastoid simulator.…”

Section: Ac and Bc Assrmentioning

confidence: 99%

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Auditory steady-state responses to bone conduction stimuli in children with hearing loss

Swanepoel

Ebrahim

Friedland

et al. 2008

International Journal of Pediatric Otorhinolaryngology

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SummaryObjective: The auditory steady-state response (ASSR) to air-conduction (AC) stimuli has been widely incorporated into audiological test-batteries for the pediatric population. The current understanding of ASSR to bone conduction (BC) stimuli, however, is more limited, especially in the case of infants and children. There are few reports on ASSR thresholds to BC stimuli in infants and young children, and none for infants or children with hearing loss. The objective of this study was to investigate BC ASSR thresholds in young children with normal hearing and various types and degrees of hearing loss. Methods: AC and BC ASSR thresholds are reported for 48 young children (mean age AE SD = 2.8 AE 1.9 years; age range = 0.25-11.5 years; 23 female). Hearing status was classified by assessing all children with a comprehensive test battery including tympanometry, diagnostic distortion-product otoacoustic emissions, click-evoked AC auditory brainstem response, AC and BC ASSR thresholds, and an otologic examination. The subjects were assigned to the categories normal hearing, conductive loss, and sensorineural loss (mild-to-moderate or severe-to-profound), for group analysis. AC and BC ASSR stimuli (carrier frequencies: 0.25-4 kHz; 67-95 Hz modulation rates; 100% amplitude and 10% frequency modulated) were presented using the GSI Audera system. Results: : Minimum levels at which spurious BC ASSR occur were established in the group of children with severe-to-profound sensorineural hearing loss (25, 40, 60, 60 and 60 dB for 0.25, 0.5, 1, 2, and 4 kHz, respectively). Children with normal hearing presented mean (1SD) BC ASSR thresholds of 19 (9), 18 (7), 16 (11), 24 (7), and 26 (8) dB HL at 0.25, 0.5, 1, 2, and 4 kHz, respectively. Significantly lower thresholds ( p < 0.0001) were obtained for 0.25, 0.5 and 1 kHz than for 2 and 4 kHz. At

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“…This place was chosen to separate the electrode from the vibrator as far as possible so as to avoid stimulus artifacts at high presentation levels. A pilot study as well as the study of Small et al [18] showed that there was no significance difference in behavioral test results with the vibrator placed either at the mastoid or higher on the temporal bone. The measurements at each frequency, both in the single-and multiple-stimulus conditions, started at 50 dB nHL and were then decreased in 5-dB steps.…”

Section: Test Proceduresmentioning

confidence: 99%

Bone-Conducted Hearing Assessment with 80-Hz Multiple Auditory Steady-State Responses to Brief Tones in Adults with Normal Hearing

Zhang²,

Han³

et al. 2011

ORL

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Objective: To investigate interactions (if any) in the bone-conduction auditory steady-state response (BC ASSR) between multiple brief tones presented simultaneously. Methods: 500-, 1,000-, 2,000-, and 4,000-Hz brief tones, repeated at a rate of 77–101 Hz, were presented using a B-71 vibrator. BC ASSR thresholds and amplitudes at 50 dB nHL were measured in two conditions where the stimulus was either presented alone or together with other stimuli. Results: Significantly larger amplitudes in the single-stimulus condition were found at 50 dB nHL. However, there was no significant threshold difference between single- and multiple-stimulus conditions. The BC ASSR thresholds (means ± SD) at 500, 1,000, 2,000, and 4,000 Hz were 96.7 ± 9.7, 75.3 ± 11.5, 65.6 ± 7.4, and 57.8 ± 7.2 dB re 1 µN ppe, respectively. Conclusion: Interactions occurred in the multiple-stimulus condition at high presentation levels, but not at threshold levels. The results of the present study imply that BC ASSR thresholds to multiple brief-tone stimuli can be assessed at the same time, at least in normal-hearing adults.

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Effects of Bone Oscillator Coupling Method, Placement Location, and Occlusion on Bone-Conduction Auditory Steady-State Responses in Infants

Cited by 38 publications

References 21 publications

Thresholds to Soft Tissue Conduction Stimulation Compared to Bone Conduction Stimulation

Thresholds to Soft Tissue Conduction Stimulation Compared to Bone Conduction Stimulation

Auditory steady-state responses to bone conduction stimuli in children with hearing loss

Bone-Conducted Hearing Assessment with 80-Hz Multiple Auditory Steady-State Responses to Brief Tones in Adults with Normal Hearing

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