The first set of analyses (IBM SPSS statistics 20.0. Armonk, NY: IBM Corp) were aimed at determining whether the amount of: (1) energy, (2) degree of phase locking within (PLI)electrodes locations and (3) degree of phase locking between electrode locations (PDLI) was different between the “active” and “passive” ERP paradigms used in the two sets of periadolescent human participants. Three Multivariate Analysis of Variances (MANOVAs) were used to test between subject effects for energy, PLI, PDLI. Variables entered into the MANOVAs included: (1) group (active vs passive task), (2) electrode location (FZ, CZ, PZ) for energy and PLI and FZ-PZ for PDLI, (3) tone (frequent and infrequent tones) and (4) the 4 time frequency regions of interest (ROIs) (delta, theta, alpha, beta). If significant main effects were found, repeated measures and interactions were explored using post hoc ANOVAs. To determine if the age of the participants in the active task differed from those in the passive task a one-way ANOVA that compared the two groups was conducted. The second question focused on whether periadolescent active task participants differed from adult
