White, 2008; Javanbakht et al., 2011) and behavioral disturbances in sensory filtering/gating and response in these patients (Stewart and White, 2008; Engel-Yeger et al., 2013). With strong visual input at M-RS, α power reduction was particularly localized to the parietal VC (primarily bilateral precuneus). Given that this region is strongly involved in visual spatial attention and perception (Corbetta et al., 1995; Behrmann et al., 2004; Corbetta and Shulman, 2011) and that the M-RS condition mimics a real-life environment with salient sensory information, this α deficit (reflective of disinhibited visual spatial attention) can underlie hypervigilance in PTSD, expressed as excessive alertness to and scanning of the environment (Conoscenti et al., 2009).
