Table 1 shows mean peak amplitudes for P3 and each TF component for each diagnostic group. Multiple regression revealed that these TF components collectively account for nearly all of the variance in peak P3 amplitude (R2 =0.91; F(5,500)=983.51, p<.001). Additionally, each component had significant zero-order correlations with P3 and with each other (see Table 2)2. These results suggest that these PCA-derived TF components characterize brain activity in a complementary, yet more detailed, way than time-domain ERP measures.
