More generally, these effects point to a developmental model of reward function that recognizes feedback processing as unfolding and dynamic, having both early (50-150 ms) and later processing stages (300-400 ms) which could reflect the transient activation of multiple cortical sources that support reward processing. In our sample, increased entrainment for reward related feedback was observed in the 13-14-year-old group. Future work will need to determine whether or not aged-related differences in oscillatory activity reflect maturation of subcomponents of reward processing, and whether not these effects are reliable even in the face of conservative or targeted hypothesis testing procedures.
