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Predictive utility. A Correlation between composite vERP measure and amyloid values. Composite measure was calculated as 3.70 × theta + 3.41 × delta + .02 × ssVEP − .7). The contributions of both theta (p = .021) and delta (p = .028) were independently significant. B ROC curve for separation of amyloid-negative vs. positive participants based on composite vERP measures. C, D TASIT performance for amyloid-positive and negative healthy elders to sarcasm total scores (C) and lie (D) trials
