“…Previous studies reveal that CES can induce a calming effect on the brain called an ''alpha state,'' which is a prevailing alpha rhythm of the brain electrical activity that will reduce subjective feelings of anxiety (De Felice, 1997). Because of this alpha state, studies have observed decreased anxiety-provoking symptoms, such as muscle tension and stress (De Felice, 1997;Kennerly, 2004Kennerly, , 2006. In addition, studies indicate that CES appears to influence the limbic system (Gilula & Kirsch, 2005), which has been implicated in the pathology of PTSD (Francati, Vermetten, & Bremmer, 2007;McEwen, 2002).…”