Fig. 8. Exploratory Behavior in Young Animals Correlates with Cortical Delta Power and Delta Node Degree.
A1. Young animals (n = 17) explored a clear glass container significantly more than aged animals (n = 18). A2. Grooming behavior was similar in aged and young animals. A3. Aged animals spent significantly more time immobile than young animals. B1. Whole-cortex power significantly correlated with the degree of wall exploration observed in young animals (n = 14) within the delta but not infraslow frequency band. B2. Whole-cortex power in aged animals (n = 11) did not correlate with exploration time in either the delta or infraslow frequency band. B3. Whole-cortex node degree correlated significantly (R2=0.43) with the degree of wall exploration within the delta but not infraslow frequency band in young animals (n = 13). Infraslow node degree did not correlate. B4. There was no correlation between delta or infraslow node degree and exploration in aged animals (n = 9).