An evaluation of PDLI values in the human participants for the electrode pair FZ and PZ using MANOVA revealed a main effect of group (periadolescents vs. adults: F=72.6, df=1,110, p<0.001), and a main effect of tone (frequent vs. infrequent (target): F=132.3, df=1,110, p<0.001). The infrequent (target) tone had a significantly higher grand mean PDLI value (0.73 ± 0.01) than the frequent tone (0.57 ± 0.01). Grand means also revealed that periadolescents had significantly lower PDLI values (0.59) than adults (0.71). ANOVA identified that for the frequently presented tone that periadolescents had significantly lower PDLI than adults for all time frequency regions of interest (F values range= 7.3-43.0).
