to react emotionally with approach or avoidance (Coan & Allen, 2004). More recent work has found associations between asymmetry and attention biases towards motivational stimuli (Perez-Edgar, Kujawa, Nelson, Cole, & Zapp, 2013; Miskovic & Schmidt, 2010), suggesting that this lateralization can also have consequences for cognition. Studies have not yet tested these ideas using EEG coherence, which unlike EEG power, is not an estimate of the amount of neural activity, but rather, the coordination of activity across sites (Thatcher, 2012). However, functional integration of left frontal regions could underlie changes in the capacity to activate approach motivational systems in order to engage in goal-directed behavior. This idea is speculative, but has interesting implications and is worth exploring.
