We performed similar analyses for the AMPA receptor subunit GluA1 and observed no significant differences in the prelimbic cortex [p = 0.19], but an almost significant negative linear trend in the infralimbic cortex [p = 0.057, Fig. 8 C–D].
By the end of phase 3 training, there was no significant difference in accuracy based on age group assessed by two-tailed, unpaired t -test [t = 0.594, p = 0.56], and there was not a significant effect of age on reinforcers earned at the end of training [t = 2.06, p = 0.061]; though there was a strong trend towards adults earning more reinforcers, potentially indicating greater motivation to perform the task.