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. 2024 Feb 20;27(4):109295. doi: 10.1016/j.isci.2024.109295

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© 2024 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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EEG results: P400 response

(A) Group-averaged (young adult: N = 20; normal-hearing elderly: N = 13; hearing-impaired older elderly: N = 16) parietal (Pz; maximal P400 amplitude) ERP responses to figure (solid line) and no-figure (dashed line) related parietal (Pz lead) p400 elicited stimuli obtained in the LN (red) and the HN condition (black), respectively, for young normal-hearing and hearing-impaired older listeners.). Zero latency is at the onset of the figure event. Gray vertical bands show the measurement window for P400. On the right, the effect of FIGURE is shown the bar charts on the barplot for the right side of the panel show the mean P400 amplitude, respectively, for figure and no-figure trials (collapsed across LN and HN) and groups. Amplitudes (with SEM) separately for the LN and HN conditions. Significant group effects (p < 0.05) are marked by gray lines beside the bar charts.

(B) Scalp distribution of figure elicited the P400 response, respectively, responses to figure stimuli for the LN and HN conditions and groups with color scale below.