“In 1989, Eugene Peniston and Paul Kulkosky used a specific neurofeedback protocol for the treatment of posttraumatic stress disorder (PTSD). They facilitated twilight states of learning by rewarding both alpha and theta. Their protocol has come to be called deep-states training (Robbins, 2000a). Guided visualizations and skin temperature (ST) training were also part of the protocol design. The first landmark study included a small population of Vietnam veterans. Two years later Peniston and Kulkosky studied the effect of neurofeedback training with veterans who had dual diagnoses of alcoholism and PTSD. Both studies had positive outcomes (Peniston & Kulkosky, 1999). They”