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Relationship of Loudness-dependent Auditory Evoked Potentials with Change-related Cortical Responses

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Journal PLoS One
Date 2022 Nov 7
PMID 36342917
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Abstract

Previous studies have suggested that change-related cortical responses are phenomena similar to the onset response and could be applied to the loudness dependence of auditory evoked potential (LDAEP) paradigm. In the present study, we examined the relationship between LDAEP and the change-related response using electroencephalography findings in 50 healthy subjects. There were five conditions (55, 65, 75, 85, and 95 dB) for LDAEP and five similar conditions (abrupt sound pressure increase from 70 to 75, 80, 85, 90, and 95 dB) for the change-related response. Both the onset and abrupt sound pressure increase evoked a triphasic response with peaks at approximately 50 (P50), 100 (N100), and 200 (P200) ms. We calculated the peak-to-peak amplitudes for P50/N100 and N100/P200. Medians and slopes for P50/N100 and N100/P200 amplitudes were calculated and compared between the two measures. Results revealed a significant correlation for both the slope and median for P50/N100 (r = 0.36, 0.37, p = 1.0 × 10-2, 7.9 × 10-3), N100/P200 (r = 0.40, 0.34, p = 4.0 × 10-3, 1.6 × 10-2), and P50/N100/P200 (r = 0.36, 0.35, p = 1.0 × 10-2, 1.3 × 10-2). These results suggested that the change-related response and LDAEP shared generation mechanisms at least partially.

Citing Articles

Individualized Closed-Loop Acoustic Stimulation Suggests an Alpha Phase Dependence of Sound Evoked and Induced Brain Activity Measured with EEG Recordings.

Harlow T, Marquez S, Bressler S, Read H eNeuro. 2024; 11(6).

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