A Developmental Study of Bone Conduction Auditory Brain Stem Response in Infants

Yang, Edward Y.; Rupert, Allen L.; Moushegian, George

doi:10.1097/00003446-198708000-00009

Cited by 68 publications

(72 citation statements)

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“…Based on our boneconduction ASSR findings, individual infants have at least 10 to 30 dB of interaural attenuation. These ASSR results are consistent with previous estimates of attenuation of bone-conducted signals reported by Yang et al (1987) for infants up to 1 yr of age. For infants, therefore, a bone-conducted signal may or may not cross over to stimulate the opposite cochlea depending on the stimulus presentation level.…”

Section: Discussionsupporting

confidence: 92%

Normal Ipsilateral/Contralateral Asymmetries in Infant Multiple Auditory Steady-State Responses to Air- and Bone-Conduction Stimuli

Small

Stapells

2008

Ear &Amp; Hearing

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Objectives: Two-channel recordings of infants' airand bone-conduction auditory brainstem responses to brief tones show ipsilateral and contralateral (to the stimulated ear) asymmetries which may be used to isolate which cochlea is the primary contributor to the response. The objective of this study was to determine whether similar ipsilateral/contralateral asymmetries are also present in the air-and boneconduction "brainstem" (77 to 101 Hz) auditory steady-state responses (ASSRs) of infants.Design: Two-channel ASSRs were recorded in infants (2 to 11 mo) and adults (18 to 40 yr) with normal hearing. Multiple stimuli (carrier frequencies: 500 to 4000 Hz; amplitude/frequency modulated) were presented using a B-71 oscillator on the temporal bone or an ER3-A insert earphone. Bone-conduction ASSR amplitudes, phase delays, and thresholds were obtained for the electroencephalographic (EEG) channels ipsilateral and contralateral to the oscillator temporal-bone placement. Bone-conduction ASSRs were also obtained to the stimulus presented to the opposite temporal bone (at 40 dB HL only). Airconduction ASSR amplitudes and phase delays were obtained at 60 dB HL in each ear for the EEG channels ipsilateral and contralateral to the transducer.Results: Infants showed more ipsilateral/contralateral asymmetries in both air-and bone-conduction ASSRs compared with adults. Mean bone-conduction ASSR thresholds in infants were 13 to 15 dB higher (i.e., poorer) in the contralateral EEG channel compared with the ipsilateral EEG channel for 500 to 4000 Hz. In adults, there were no large differences (i.e., within 1 dB) between ipsilateral and contralateral ASSR thresholds. Based on ipsilateral/ contralateral threshold differences in infants, interaural attenuation for bone-conducted stimuli was estimated to be at least 10 to 30 dB for most infants. In contrast, most adults showed little interaural attenuation for bone-conducted stimuli.ASSR amplitudes are larger and phase delays are shorter in the ipsilateral EEG channel. For infants, the difference in air-conduction ASSR amplitude between EEG channels was twice that observed for adults. Infants also had greater ASSR amplitude differences between EEG channels for bone-conduction stimuli compared with adults, but the difference was less than that seen for air-conduction stimuli. For air-conduction stimuli, infants had significantly longer phase delays in the contralateral EEG channel compared with the ipsilateral EEG channel. Adults showed no significant differences in air-conduction ASSR phase delay between EEG channels. For bone-conduction stimuli, both infants and adults had significantly longer phase delays in the contralateral EEG channel compared with the ipsilateral EEG channel; the differences in ASSR phase delays between EEG channels were much smaller in infants compared with adults and fewer adults had absent responses in the contralateral EEG channels compared with infants (12% versus 34%). When the transducers were switched to the opposite ear/mastoid, the infant and adult ipsi...

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Section: Discussionsupporting

confidence: 92%

Normal Ipsilateral/Contralateral Asymmetries in Infant Multiple Auditory Steady-State Responses to Air- and Bone-Conduction Stimuli

Small

Stapells

2008

Ear &Amp; Hearing

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“…Amount of force and coupling method are therefore important issues. Also, the bone oscillator can be positioned in different locations on the skull, potentially affecting the intensity of the signal reaching the cochlea (Stuart, Yang & Stenstrom, 1990;Yang, Rupert & Moushegian, 1987). It is also well known, at least for adults, that occluding the ear canal while estimating bone-conduction thresholds significantly improves bone-conduction thresholds in the low frequencies, a change known as the occlusion effect (Tonndorf, 1966).…”

Section: Discussionmentioning

confidence: 99%

“…There are some auditory brain stem response (ABR) data which have been interpreted to suggest that bone oscillator location does affect the response in infants (Yang et al, 1987). Yang et al (1987) investigated the effect of oscillator placement (frontal/ forehead, occipital, and temporal) on wave V ABR latencies to bone-conduction clicks for neonates, 1-yrold infants and adults.…”

Section: Discussionmentioning

confidence: 99%

“…Yang et al (1987) investigated the effect of oscillator placement (frontal/ forehead, occipital, and temporal) on wave V ABR latencies to bone-conduction clicks for neonates, 1-yrold infants and adults. Latency results were found to vary with both age of subject and oscillator placement.…”

Section: Discussionmentioning

confidence: 99%

“…The difference in forehead-mastoid threshold for infants, however, increases with increasing frequency: thresholds at 1000, 2000, and 4000 Hz were larger than those of the adult by 2.5, 6.5, and 6.0 dB, respectively. Possible reasons for the larger attenuation differences at higher frequencies exhibited by the infant compared to the adult may result from the membranous sutures surrounding the temporal bone in the infant (Yang et al, 1987). These membranous sutures have the effect of attenuating the vibratory signal before it reaches the cochlea.…”

Section: Bone Oscillator Placementmentioning

confidence: 99%

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

2007

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Objective: The aim of these experiments was to investigate procedures used when estimating boneconduction thresholds in infants. The objectives were: (i) to investigate the variability in force applied using two common bone-oscillator coupling methods and to determine whether coupling method affects threshold estimation, (ii) to examine effects of bone-oscillator placement on bone-conduction ASSR thresholds, and (iii) to determine whether the occlusion effect is present in infants by comparing bone-conduction ASSR thresholds for unoccluded and occluded ears.Design: Experiment 1A: The variability in the amount of force applied to the bone oscillator by trained assistants (n ‫؍‬ 4) for elastic-band and handheld coupling methods was measured. Experiment 1B: Bone-conduction behavioral thresholds in 10 adults were compared for two coupling methods. Experiment 1C: ASSR thresholds and amplitudes to multiple bone-conduction stimuli were compared in 10 infants (mean age: 17 wk) using two coupling methods. Experiment 2: Bone-conduction ASSR thresholds and amplitudes were compared for temporal, mastoid and forehead oscillator placements in 15 preterm infants (mean age: 35 wk postconceptual age (PCA)). Experiment 3: Bone-conduction ASSR thresholds, amplitudes and phase delays were compared in 13 infants (mean age: 15 wk) for an unoccluded and occluded test ear. All infants that participated had passed a hearing screening test.Results: Experiment 1A: Coupling method did not significantly affect the variability in force applied to the oscillator. Experiment 1B: There were no differences in adult bone-conduction behavioural thresholds between coupling methods. Experiment 1C: There was no significant difference between oscillator coupling method or significant frequency x coupling method interaction for ASSR thresholds or amplitudes in the young infants tested. However, there was a nonsignificant 9-dB better threshold at 4000 Hz for the elastic-band method. Experiment 2: Mean bone-conduction ASSR thresholds for the preterm infants were not significantly different for the temporal and mastoid placements. Mean ASSR thresholds for the forehead placement were significantly higher compared to the other two placements (12-18 dB higher on average). Mean ASSR amplitudes were significantly larger for the temporal and mastoid placements compared to the forehead placement. Experiment 3: There was no difference in mean ASSR thresholds, amplitudes or phase delays for the unoccluded versus occluded conditions. Conclusions:Trained assistants can apply an appropriate amount of force to the bone oscillator using either the elastic-band or hand-held method. Coupling method has no significant effect on estimation of bone-conduction thresholds; therefore, either may be used clinically provided assistants are appropriately trained. For preterm infants, there are no differences in ASSRs when the oscillator is positioned at the temporal or mastoid placement. However, thresholds are higher and amplitudes are smaller for the forehead placement, consequ...

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Auditory air and bone conduction brainstem responses and damped rotation test for young children with bilateral congenital atresia of the ears

Kaga

Tanaka

1995

International Journal of Pediatric Otorhinolaryngology

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A Developmental Study of Bone Conduction Auditory Brain Stem Response in Infants

Cited by 68 publications

References 0 publications

Normal Ipsilateral/Contralateral Asymmetries in Infant Multiple Auditory Steady-State Responses to Air- and Bone-Conduction Stimuli

Normal Ipsilateral/Contralateral Asymmetries in Infant Multiple Auditory Steady-State Responses to Air- and Bone-Conduction Stimuli

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

Auditory air and bone conduction brainstem responses and damped rotation test for young children with bilateral congenital atresia of the ears

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