amplitude (power) or both [41]. In FASD, relative increases in gamma oscillations were seen in right frontal clusters, while relative decreases occurred in right parietal and left temporal/occipital clusters [42]. These gamma-band power changes occurred despite a lack of difference in task performance in these groups. In addition, in adolescents with FASD there was a positive relationship between M100 peak latency and gamma oscillatory power in a cluster located around the medial frontal eye field region [42]. No such relationship was apparent in controls, and gamma-band power was not correlated with saccadic reaction time in either group. Stephen et al. suggested that the altered gamma-band power might represent an imbalance between neuronal excitation and inhibition.
