scholarly journals Effectiveness of invariant versus varied-color/varied-pattern visual alerting tasks during acquisition of late auditory evoked potentials

2013 ◽  
Author(s):  
Charles G. Marx ◽  
Edward L. Goshorn
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Varied Pattern ◽  
Late Auditory Evoked Potentials

Mismatch negativity and late auditory evoked potentials in comatose patients

1999 ◽  
Vol 110 (9) ◽  
pp. 1601-1610 ◽  
Author(s):  
C Fischer ◽  
D Morlet ◽  
P Bouchet ◽  
J Luaute ◽  
C Jourdan ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Mismatch Negativity ◽  
Auditory Evoked Potentials ◽  
Late Auditory Evoked Potentials

scholarly journals Systematic review and meta-analysis of late auditory evoked potentials as a candidate biomarker in the assessment of tinnitus

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243785
Author(s):  
Emilie Cardon ◽  
Iris Joossen ◽  
Hanne Vermeersch ◽  
Laure Jacquemin ◽  
Griet Mertens ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Meta Analysis ◽  
Objective Evaluation ◽  
Sensitivity Analyses ◽  
Experimental Conditions ◽  
Subjective Tinnitus ◽  
P300 Component ◽  
Potential Biomarker ◽  
Late Auditory Evoked Potentials

Subjective tinnitus, the perception of sound in the absence of any sound source, is routinely assessed using questionnaires. The subjective nature of these tools hampers objective evaluation of tinnitus presence, severity and treatment effects. Late auditory evoked potentials (LAEPs) might be considered as a potential biomarker for assessing tinnitus complaints. Using a multivariate meta-analytic model including data from twenty-one studies, we determined the LAEP components differing systematically between tinnitus patients and controls. Results from this model indicate that amplitude of the P300 component is lower in tinnitus patients (standardized mean difference (SMD) = -0.83, p < 0.01), while latency of this component is abnormally prolonged in this population (SMD = 0.97, p < 0.01). No other investigated LAEP components were found to differ between tinnitus and non-tinnitus subjects. Additional sensitivity analyses regarding differences in experimental conditions confirmed the robustness of these results. Differences in age and hearing levels between the two experimental groups might have a considerable impact on LAEP outcomes and should be carefully considered in future studies. Although we established consistent differences in the P300 component between tinnitus patients and controls, we could not identify any evidence that this component might covary with tinnitus severity. We conclude that out of several commonly assessed LAEP components, only the P300 can be considered as a potential biomarker for subjective tinnitus, although more research is needed to determine its relationship with subjective tinnitus measures. Future trials investigating experimental tinnitus therapies should consider including P300 measurements in the evaluation of treatment effect.

scholarly journals Neural correlates of masked and unmasked tones: psychoacoustics and late auditory evoked potentials (LAEPs)

2021 ◽  
Author(s):  
Hyojin Kim ◽  
Viktorija Ratkute ◽  
Bastian Epp
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Just Noticeable Difference ◽  
Threshold Levels ◽  
Hearing Ability ◽  
Masking Release ◽  
Hearing Thresholds ◽  
Masking Level Difference ◽  
The Difference ◽  
Late Auditory Evoked Potentials

Hearing thresholds can be used to quantify one's hearing ability. In various masking conditions, hearing thresholds can vary depending on the auditory cues. With comodulated masking noise and interaural phase disparity (IPD), target detection can be facilitated, lowering detection thresholds. This perceptual phenomenon is quantified as masking release: comodulation masking release (CMR) and binaural masking level difference (BMLD). As these measures only reflect the low limit of hearing, the relevance of masking release at supra-threshold levels is still unclear. Here, we used both psychoacoustic and electro-physiological measures to investigate the effect of masking release at supra-threshold levels. We investigated whether the difference in the amount of masking release will affect listening at supra-threshold levels. We used intensity just-noticeable difference (JND) to quantify an increase in the salience of the tone. As a physiological correlate of JND, we investigated late auditory evoked potentials (LAEPs) with electroencephalography (EEG). The results showed that the intensity JNDs were equal at the same intensity of the tone regardless of masking release conditions. For LAEP measures, the slope of the P2 amplitudes with a function of the level was inversely correlated with the intensity JND. In addition, the P2 amplitudes were higher in dichotic conditions compared to diotic conditions. Estimated the salience of the target tone from both experiments suggested that the salience of masked tone at supra-threshold levels may only be beneficial with BMLD.

Comparing the habituation of late auditory evoked potentials to loud and soft sound

2009 ◽  
Vol 30 (2) ◽  
pp. 141-153 ◽  
Author(s):  
Mai Mariam ◽  
Wolfgang Delb ◽  
Farah I Corona-Strauss ◽  
Marc Bloching ◽  
Daniel J Strauss
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Late Auditory Evoked Potentials
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