Comparison of Silent Gap in Noise Cortical Auditory Evoked Potentials in Matched Tinnitus and No-Tinnitus Control Subjects

2019 ◽  
Vol 28 (2) ◽  
pp. 260-273 ◽  
Author(s):  
Kenneth Morse ◽  
Kathy R. Vander Werff
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Control Subjects ◽  
Cortical Auditory Evoked Potentials

New possibility for measuring the cortical auditory evoked potentials: the HEARLab

2014 ◽  
Vol 155 (38) ◽  
pp. 1524-1529
Author(s):  
Ádám Bach ◽  
Ferenc Tóth ◽  
Vera Matievics ◽  
József Géza Kiss ◽  
József Jóri ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Evoked Potentials ◽  
Auditory System ◽  
Hearing Aids ◽  
Pure Tone ◽  
Auditory Evoked Potentials ◽  
Normal Hearing ◽  
Speech Stimuli ◽  
Novel Method ◽  
Cortical Auditory Evoked Potentials

Introduction: Cortical auditory evoked potentials can provide objective information about the highest level of the auditory system. Aim: The purpose of the authors was to introduce a new tool, the “HEARLab” which can be routinely used in clinical practice for the measurement of the cortical auditory evoked potentials. In addition, they wanted to establish standards of the analyzed parameters in subjects with normal hearing. Method: 25 adults with normal hearing were tested with speech stimuli, and frequency specific examinations were performed utilizing pure tone stimuli. Results: The findings regarding the latency and amplitude analyses of the evoked potentials confirm previously published results of this novel method. Conclusions: The HEARLAb can be a great help when performance of the conventional audiological examinations is complicated. The examination can be performed in uncooperative subjects even in the presence of hearing aids. The test is frequency specific and does not require anesthesia. Orv. Hetil., 2014, 155(38), 1524–1529.

The Detection of Infant Cortical Auditory Evoked Potentials (CAEPs) Using Statistical and Visual Detection Techniques

2010 ◽  
Vol 21 (05) ◽  
pp. 347-356 ◽  
Author(s):  
Lyndal Carter ◽  
Maryanne Golding ◽  
Harvey Dillon ◽  
John Seymour
Keyword(s):  
Evoked Potentials ◽  
Repeated Measures ◽  
Auditory Evoked Potentials ◽  
Sensitivity Index ◽  
Screening Programs ◽  
Hotelling's T2 ◽  
Hotelling’S T2 ◽  
Response Detection ◽  
Cortical Auditory Evoked Potentials ◽  
Experienced Examiner

Background: With the advent of newborn hearing screening programs, the need to verify the fit of hearing aids in young infants has increased. The recording of cortical auditory evoked potentials (CAEPs) for this purpose is quite feasible, but rapid developmental changes that affect response morphology and the presence of electrophysiological noise can make subjective response detection challenging. Purpose: The purpose of this study was to investigate the effectiveness of an automated statistic versus experienced examiners in detecting the presence of infant CAEPs when stimuli were present and reporting the absence of CAEPs when no stimuli were present. Research Design: A repeated-measures design was used where infant-generated CAEPs were interpreted by examiners and an automated statistic. Study Sample: There were nine male and five female infants (mean age, 12 mo; SD, 3.4) who completed behavioral and electrophysiological testing using speech-based stimuli. Data Collection and Analysis: In total, 87 infant CAEPs were recorded to three sensation levels, 10, 20 and 30 dB relative to the behavioral thresholds and to nonstimulus trials. Three examiners were presented with these responses: (1) “in series,” where waveforms were presented in order of decreasing stimulus presentation levels, and (2) “nonseries,” where waveforms were randomized completely and presented as independent waveforms. The examiners were given no information about the stimulus levels and were asked to determine whether responses to auditory stimulation could be observed and their degree of certainty in making their decision. Data from the CAEP responses were also converted to multiple dependent variables and analyzed using Hotelling's T2. Results from both methods of response detection were analyzed using a repeated measures ANOVA (analysis of variance) and parameters of signal detection theory known as d-prime (d′) and the area under the receiver operating characteristic (ROC) curve. Results: Results showed that as the stimulus level increased, the sensitivity index, d′, increased for both methods of response detection, but neither reached the maximum possible d′ value with a sensation level of 30 dB. The examiners with the greatest experience and Hotelling's T2 were equally sensitive in differentiating the CAEP from noise. Conclusions: Hotelling's T2 appears to detect CAEPs from normal hearing infants at a rate equal to that of an experienced examiner. A clinical instrument that applies Hotelling's T2 on-line, so that the likelihood of response detection can be assessed objectively, should be of particular benefit to the novice or less experienced examiner.

Cortical auditory evoked potentials with different acoustic stimuli: Evidence of differences and similarities in coding in auditory processing disorders

2021 ◽  
pp. 110944
Author(s):  
Pamela Papile Lunardelo ◽  
Marisa Tomoe Hebihara Fukuda ◽  
Patricia Aparecida Zuanetti ◽  
Ângela Cristina Pontes-Fernandes ◽  
Marita Iannazzo Ferretti ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Auditory Processing ◽  
Auditory Evoked Potentials ◽  
Auditory Processing Disorders ◽  
Acoustic Stimuli ◽  
Cortical Auditory Evoked Potentials

Effects of Hearing Aid Amplification and Stimulus Intensity on Cortical Auditory Evoked Potentials

2007 ◽  
Vol 12 (4) ◽  
pp. 234-246 ◽  
Author(s):  
Curtis J. Billings ◽  
Kelly L. Tremblay ◽  
Pamela E. Souza ◽  
Malcolm A. Binns
Keyword(s):  
Evoked Potentials ◽  
Stimulus Intensity ◽  
Auditory Evoked Potentials ◽  
Hearing Aid ◽  
Cortical Auditory Evoked Potentials

scholarly journals Effects of stimulation intensity, gender and handedness upon auditory evoked potentials

1992 ◽  
Vol 50 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Susana Camposano ◽  
Fernando Lolas
Keyword(s):  
Corpus Callosum ◽  
Evoked Potentials ◽  
Stimulus Intensity ◽  
Auditory Evoked Potentials ◽  
Right Hemisphere ◽  
Cognitive Components ◽  
Left Handed ◽  
And Gender ◽  
The Right ◽  
Cortical Auditory Evoked Potentials

Left handers and women show less anatomical brain asymmetry, larger corpus callosum and more bilateral representation of specific functions. Sensory and cognitive components of cortical auditory evoked potentials (AEF) have been shown to be asymmetric in right handed males and to be influenced by stimulus intensity. In this study the influence of sex, handedness and stimulus intensity upon AEP components is investigated under basal conditions of passive attention. 14 right handed males, 14 right handed females, 14 left handed males, and 14 left handed females were studied while lying awake and paying passive attention to auditory stimulation (series of 100 binaural clicks, duration 1 msec, rate 1/sec, at four intensities). Cz, C3 and C4 referenced to linked mastoids and right EOG were recorded. Analysis time was 400 msec, average evoked potentials were based on 100 clicks. Stimulus intensity and gender affect early sensory components (P1N1 and N1P2) at central leads, asymmetry is influenced only by handedness, right handers showing larger P1N1 amplitudes over the right hemisphere.

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