Basic properties of the sound-evoked post-auricular muscle response (PAMR)

O’Beirne, Greg A.; Patuzzi, Robert

doi:10.1016/s0378-5955(99)00159-8

Cited by 100 publications

(119 citation statements)

References 26 publications

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“…One of the infants participated in a previous study . Four additional adult participants were excluded from the analyses of the mean data because they had atypically large ASSR amplitudes (Ͼ253 nV); in contrast with most recent ASSR studies, the present study used mastoid electrodes and, therefore, it is likely that these very large "ASSRs" reflected postauricular muscle responses rather than responses arising from the auditory brainstem (O'Beirne & Patuzzi, 1999).…”

Section: Participantsmentioning

confidence: 93%

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: Participantsmentioning

confidence: 93%

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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“…Along the way oculomotor-related oVEMPs, certain vestibulo-spinal reflexes like cVEMP and also the stapedius reflex to loud acoustic stimuli are activated and contribute to temporally overlapping potentials, on which there is extensive literature and reviews elsewhere (Leibner et al, 1990;Li et al, 1993Li et al, , 1995O'Beirne and Patuzzi, 1999;Rodionov et al, 1996;Sichel et al, 2000;Miyamoto et al, 2007;Rosengren et al, 2005Rosengren et al, , 2009aRosengren et al, ,b, 2010aRosengren et al, ,b, 2011. The present study was focused on later potentials of the multisensory and interconnected cortical patches of the ''vestibular network'', including anterior insular and posterior opercular regions.…”

Section: Early Latency Potentials and Beyond The 20 Ms Periodmentioning

confidence: 99%

Intermediate latency evoked potentials of cortical multimodal vestibular areas: Acoustic stimulation

Kammermeier¹,

Singh²,

Noachtar³

et al. 2015

Clinical Neurophysiology

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“…The sample rate for both middle-and long-latency potentials was 2000 Hz, and the EEG was bandpass filtered (1-500 Hz). Middle-latency potentials can be contaminated by postauricular muscle activity beginning at a latency of w10-20 ms. Factors such as high stimulus levels and head position influence neck muscle activity (Bickford et al, 1964;O'Beirne and Patuzzi, 1999). To avoid the contamination of evoked potentials by post-auricular muscle activity, the present study used relatively moderate stimulus intensities (100 dB SPL), and subjects reclined on a comfortable chair with their head supported by a pillow.…”

Section: Electrophysiological Recordingsmentioning

confidence: 99%

Auditory brain-stem, middle- and long-latency evoked potentials in mild cognitive impairment

Irimajiri

Golob

Starr

2005

Clinical Neurophysiology

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Objective: Mild cognitive impairment (MCI) is a selective episodic memory deficit in the elderly with a high risk of Alzheimer's disease. The amplitudes of a long-latency auditory evoked potential (P50) are larger in MCI compared to age-matched controls. We tested whether increased P50 amplitudes in MCI were accompanied by changes of middle-latency potentials occurring around 50 ms and/or auditory brainstem potentials. Methods: Auditory evoked potentials were recorded from age-matched controls (nZ16) and MCI (nZ17) in a passive listening paradigm at two stimulus presentation rates (2/s, 1/1.5 s). A subset of subjects also received stimuli at a rate of 1/3 s. Results: Relative to controls, MCI subjects had larger long-latency P50 amplitudes at all stimulus rates. Significant group differences in N100 amplitude were dependent on stimulus rate. Amplitudes of the middle-latency components (Pa, Nb, P1 peaking at approximately 30, 40, and 50 ms, respectively) did not differ between groups, but a slow wave between 30 and 49 ms on which the middle-latency components arose was significantly increased in MCI. ABR Wave V latency and amplitude did not differ significantly between groups. Conclusions: The increase of long-latency P50 amplitudes in MCI reflects changes of a middle-latency slow wave, but not of transient middle-latency components. There was no evidence of group difference at the brain-stem level. Significance: Increased slow wave occurring as early as 50 ms may reflect neurophysiological consequences of neuropathology in MCI.

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Basic properties of the sound-evoked post-auricular muscle response (PAMR)

Cited by 100 publications

References 26 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

Intermediate latency evoked potentials of cortical multimodal vestibular areas: Acoustic stimulation

Auditory brain-stem, middle- and long-latency evoked potentials in mild cognitive impairment

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