Scalp recorded auditory evoked potentials and sonomotor responses: An evaluation of components and recording techniques

Streletz, Leopold J.; Katz, Leonard; Hohenberger, Micha; Cracco, Roger Q.

doi:10.1016/0013-4694(77)90127-4

Cited by 69 publications

(13 citation statements)

References 21 publications

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“…Features of Na and Pa over the frontal area Both Na and Pa were highest in amplitude over the frontocentral area and confirmed previous reports (Picton et al 1974;Streletz et al 1977;Comacchio et al 1988;Deiber et al 1988;Jacobson and Grayson 1988). It seems that such a distribution pattern is caused by the overlapping of two (i.e., left and right) Fig 6.…”

Section: Resultssupporting

confidence: 89%

“…The phase shifts of Na and/or Pa, as described by Streletz et al (1977) and Cacace et al (1990), were observed between the frontal and temporo-occipital areas in about one third of the records. This should be explained by a supposition of another dipole which points to temporo-occipital area, for this phase shift developed gradually and no case showed sudden phase reversal between adjacent electrodes as is seen in N20-P20 of somatosensory evoked potential (Tsuji and Murai 1986;Desmedt et al 1987).…”

Section: Dipole Pointing To Temporo-occipital Areamentioning

confidence: 87%

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The Auditory Evoked Middle-Latency Responses(MLRs): Their Normative Variation and Generators.

Seki

Kimura

Ohnuma

et al. 1993

Tohoku J. Exp. Med.

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Auditory evoked middlelatency responses (MLRs) to clicks were recorded in 68 normal adults (ages from 21 to 59 year-old) at 16 scalp locations, all referred to a balanced non-cephalic reference. Both Na and Pa components were clearly demonstrated in all the subjects studied through the digital high-pass filtering. Both Na and Pa components were distributed dominantly over the frontal area in all subjects. The amplitudes of Na and Pa were significantly higher with binaural stimulation than with a monaural stimulation, and the existence of binaural interaction was also suggested. Binaural effect was more prominent in Pa than in Na component. When the data recorded from F3 and F4 electrodes were compared, most of F3/F4 amplitude ratios of Na and Pa were included between 0.7 and 1.5. The F3/F4 ratio should be useful indices for the diagnosis of excessive laterality. We also demonstrated gradual phase shifts of Na and Pa between the frontal and temporooccipital area in about one-third of the records. This phenomenon strongly suggests that both Na and Pa components are derived from complex generators. evoked potentials; auditory evoked potentials; middle latency; normal adults

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Section: Resultssupporting

confidence: 89%

Section: Dipole Pointing To Temporo-occipital Areamentioning

confidence: 87%

The Auditory Evoked Middle-Latency Responses(MLRs): Their Normative Variation and Generators.

Seki

Kimura

Ohnuma

et al. 1993

Tohoku J. Exp. Med.

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“…This variability appears to result from factors such as muscle tone, head and eye position, subject state, and recording filter pass band. PAMR is reduced when subjects are more relaxed (Gibson, 1974;Humphries et al, 1976) or asleep (Davis, 1976;Streletz et al, 1977). PAMR amplitude is increased by neck traction (Cody & Bickford, 1969), head lowering (Yoshie & Okudaira, 1969;Dus & Wilson, 1975), teeth gritting (Dus & Wilson, 1975;Gibson, 1978), propping the head forward (Yoshie & Okudaira, 1969;Thornton, 1975), pushing the head against a force (Clifford-Jones et al, 1979), or lateral eye movement (Patuzzi & O'Beirne, 1999b;Patuzzi & Thomson, 2000).…”

Section: Sumariomentioning

confidence: 99%

The post-auricular muscle response: an objective electrophysiological method for evaluating hearing sensitivity

Purdy

Agung

Hartley

et al. 2005

International Journal of Audiology

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Post-auricular muscle responses (PAMRs) were recorded in sixteen adults with normal hearing and twenty adults with sensorineural hearing loss. Click stimuli were presented at 20 to 80 dB nHL via insert earphones. Only one ear was tested in hearing-impaired subjects, but normal-hearing subjects were tested monaurally and binaurally. PAMR amplitudes declined and latencies increased with decreasing click intensity. Both binaural stimulation and eye turn enhanced the PAMR. In hearing-impaired subjects, PAMR thresholds were correlated with audiometric thresholds for the eyes-turned condition. All normal-hearing subjects had PAMR when recording conditions were optimized and half had responses for the least optimal condition (20 dB nHL, monaural, eyes front). With eyes turned and monaural clicks at 35 dB nHL, the level widely used for infant hearing screening, most normal-hearing adults had a PAMR. Thus the PAMR is a robust response that may be a useful adjunct to ABR for objective hearing assessment.

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“…1a) or lower ( fig. 1c) edges of the pinna [Streletz et al, 1977]. As shown, although the PAMR can be recorded with the pinna Fig.…”

Section: Methodsmentioning

confidence: 99%

“…One of the standard, non-invasive and objective tests for hearing impairment involves numerically averaging the (electrical) auditory evoked response (AER) at the skin surface during presentation of repetitive clicks or tone bursts [Bickford et al, 1963Cody et al, 1964;Davis, 1976;Hall, 1992;Schwarz et al, 1994;Streletz et al, 1977]. The human AER consists of an early component (0-12 ms) which includes the brainstem auditory evoked response (BAER), an auditory middle-latency response (12-50 ms), dominated in many cases by the myogenic postauricular muscle response (PAMR) [Bochenek and Bochenek, 1976;Davis et al, 1965;De Grandis and Santoni, 1980;Douek et al, 1973Douek et al, , 1974Douek et al, , 1975Dus and Wilson, 1975;Gibson, 1975], and a series of longer-latency responses occurring 50-1000 ms after the acoustic stimulus.…”

Section: Introductionmentioning

confidence: 99%

Auditory Evoked Response Test Strategies to Reduce Cost and Increase Efficiency: The Postauricular Muscle Response Revisited

Patuzzi

Thomson

2000

Audiol Neurotol

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We describe a number of techniques in auditory evoked response (AER) testing for hearing loss which should decrease its cost and increase its efficiency, making its use in infant hearing screening more viable. We demonstrate the use of bit-stream averaging of the electrical signals from the head as a cheap alternative to analogue averaging and show that the average waveforms obtained are similar with both techniques. We demonstrate how the postauricular muscle response (PAMR) can be potentiated by lateral rotation of the eyes and argue that uncontrolled eye movements in previous studies have led to an unfounded belief that the PAMR is not stable. When eye rotation is used to potentiate the PAMR, the response becomes very stable and so large in most subjects that it is clearly visible in the raw traces. We also demonstrate that when the PAMR is potentiated by eye rotation, stable PAMR waveforms can be reliably obtained with tone bursts with frequencies up to and above 8 kHz and with sound levels within 30 dB of the subjective detection threshold. As a result the PAMR can be used to rapidly determine an objective audiogram in most subjects within minutes. Finally, we demonstrate a correlation technique for detecting the PAMR without waveform averaging and the need for an expensive computer. We are sure that a combination of these techniques can be used to increase the efficiency of AER screening for infant deafness and lower its cost dramatically.

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Scalp recorded auditory evoked potentials and sonomotor responses: An evaluation of components and recording techniques

Cited by 69 publications

References 21 publications

The Auditory Evoked Middle-Latency Responses(MLRs): Their Normative Variation and Generators.

The Auditory Evoked Middle-Latency Responses(MLRs): Their Normative Variation and Generators.

The post-auricular muscle response: an objective electrophysiological method for evaluating hearing sensitivity

Auditory Evoked Response Test Strategies to Reduce Cost and Increase Efficiency: The Postauricular Muscle Response Revisited

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