UBE3A and Intellectual disability: Duplications of 15q11.2-q13.1, a region that includes UBE3A and three GABAA receptor genes and is highly linked to intellectual disability, autism spectrum disorder, delayed development, and epilepsy, are associated with increased β power, which may be the result of GABAergic pathology in Dup15q syndrome (DiStefano et al., 2016; Frohlich et al., 2016, 2019b).