Distribution of Brain Stem Responses to Acoustic Stimuli over the Human Scalp

Olphen, Adriaan F. van; Rodenburg, M.; Verwey, C.

doi:10.3109/00206097809072611

Cited by 51 publications

(9 citation statements)

References 4 publications

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“…The conditioned signals were then sent binaurally to a pair of Telephonics TDH-39 headphones that had been augmented with sound attenuating "earmuffs" that surrounded the TDH39s and passively attenuated ambient noise without altering the natural orientation of the subjects' pinnae. As binaural presentation of stimuli elicits ABRs of higher amplitude than monaural presentation of stimuli with the same amplitude (van Olphen et al, 1978), binaural stimulation was used to provide the highest possible signal-to-noise ratios.…”

Section: B Acoustic Stimulus and Calibrationmentioning

confidence: 99%

The binaural click-evoked auditory brainstem response of the California sea lion ( Zalophus californianus )

Mulsow

Reichmuth

2013

The Journal of the Acoustical Society of America

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Auditory brainstem responses (ABRs) elicited by high-amplitude [100 dB re 20 μPa, peak-to-peak equivalent sound pressure level (peSPL)] aerial broadband clicks were collected from seven California sea lions in order to provide a basic description of short-latency auditory evoked potentials in this species. The waveform of the ABR was similar to that of other mammals, comprising seven positive and six negative characteristic waves. Variability in the amplitudes and latencies of waves was higher among subjects than the variability in within-subject repeated measurements. ABRs to progressively attenuated clicks were collected for three additional sea lions. Wave amplitudes decreased and latencies increased with decreasing stimulus level, with only the sixth positive wave visible near threshold (35-40 dB peSPL). Based on observations of wave latency as a function of stimulus amplitude, the sixth positive wave of the ABR is equivalent to the clinically important "wave V" identified in studies with humans. The current results provide information on the basic electrophysiology of the pinniped auditory system, including the processes that underlie brainstem auditory steady-state responses used to measure frequency-specific hearing sensitivity.

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Section: B Acoustic Stimulus and Calibrationmentioning

confidence: 99%

The binaural click-evoked auditory brainstem response of the California sea lion ( Zalophus californianus )

Mulsow

Reichmuth

2013

The Journal of the Acoustical Society of America

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“…The effect of electrode position relative to the orientation and depth of generators has been appreciated throughout the scalp-recorded evoked potential (EP) literature such that even small changes in scalp electrode position can result in large changes in cortical potential waveform morphology [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Variability of Electrode Positions Using Electrode Caps

et al. 2007

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We investigated the variability of electrode positions for a multi-channel, custom electrode cap placed onto participants' heads without taking scalp measurements. The electrode positions were digitized in a three-dimensional space for 10 young adult participants on three separate occasions. Positional variability was determined for 15 selected electrodes within the three-dimensional preauricular-nasion (PAN) coordinate system and from this system, angular coordinate variability was also determined. The standard deviations of the 15 selected electrodes ranged from 3.0 to 12.7 mm in the PAN system. These data resulted in a variability of 2.0 degrees to 10.4 degrees among the angular coordinates. The measurements indicated slightly greater variability of electrode positions compared to studies when electrodes were placed using scalp measurements. The implication of this study is that the use of electrode caps may not be appropriate when electroencephalographic (EEG) or evoked potential (EP) techniques depend on accurate electrode placement. Additionally, if a longitudinal study is performed, electrode locations should be checked to ensure that they conform with previous sessions.

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“…Out of the various positions described in the literature for the non-cephalic electrode, viz. thorax (van Olphen et al, 1978;Ishiyama et al, 1982), larynx (van Olphen et al, 1978;Terkildsen & Osterhammel, 1981) and neck (Katbamna et al, 1995), the electrode positioned on the subject's nape of the neck was chosen for reasons of practicality. No special measures to suppress the electrocardiogram (ECG, e.g.…”

Section: Methodsmentioning

confidence: 99%

“…During the early years, interest was focused on implementing a method of recording all the potential components in an approach free from artefacts (van Olphen et al, 1978). In lateral recording between vertex (different electrode) and ipsilateral mastoid or earlobe (reference electrode) it was found that, in addition to Wave V, the earlier waves and in particular Wave I can be recorded.…”

Section: Introductionmentioning

confidence: 99%

Influence of Electrode Position on Near-Threshold Recording of Auditory Evoked Brainstem Potentials

Pethe

Mühler²,

Specht³

1998

Scandinavian Audiology

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Use of brainstem potentials in audiology is based on identifying a response in the near-threshold range. Wave V has turned out to be the component of the brainstem potentials that can be detected with a great deal of reliability when assessment of the threshold for the particular stimulus is desirable. As the detection of Wave I can be dispensed within audiologic diagnosis, the question arises as to whether or not a non-cephalic reference electrode compared to the common lateral position of the reference electrode on the ipsilateral mastoid produces a more stable Wave V of increased amplitude. In a group of 20 normal-hearing adults, near-threshold stimulation with clicks was conducted and the brainstem potentials recorded simultaneously with the reference electrode placed in four different locations (ipsilateral mastoid, contralateral mastoid, non-cephalic electrode, and ipsilateral earlobe). At all of the three intensities studied (10 dB nHL, 20 dB nHL and 30 dB nHL), recording with the non-cephalic reference yielded the highest amplitudes, the finding being statistically significant.

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Distribution of Brain Stem Responses to Acoustic Stimuli over the Human Scalp

Cited by 51 publications

References 4 publications

The binaural click-evoked auditory brainstem response of the California sea lion ( Zalophus californianus )

The binaural click-evoked auditory brainstem response of the California sea lion ( Zalophus californianus )

Variability of Electrode Positions Using Electrode Caps

Influence of Electrode Position on Near-Threshold Recording of Auditory Evoked Brainstem Potentials

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