Age produced similar results on energy values collected following the infrequent tone in the rats. Grand averages of the energy values for the group of rats with complete data (n=31) for the periadolescent and the adult rats for the infrequent tone are presented in Figure 7. In the rats, repeated measures ANOVA revealed that periadolescents had significantly higher energy values than adults to the infrequent (target) tone in the delta (F=44.2, df=1,32, p<0.001), theta (F=64.9, df=1,32, p<0.001), and alpha (F=36.5, df=1,32, p<0.001) frequency ranges in frontal cortex (FCTX), and in parietal cortex (PCTX) in the delta (F=16.9, df=1,32, p< 0.001), theta (F=25.6, df=1,32, p<0.001), alpha (F=26.2, df=1,32, p<0.001), and beta (F= 11.9, df=1,32, p=0.002) frequencies as seen in Figure 2b and Table 3.
