This article addresses the issue of arousal in developmental trauma. The article suggests that emotional disturbance can be seen as a disruption in rhythmic regulation. The author presents a treatment approach that emphasizes training the regulation of emotional arousal and discusses the impact of this approach on identity in this population. The major affect of concern is fear, and the primary goal of neurofeedback is seen as the reduction of fear and reactivity. The article attempts to elucidate the clinical challenges confronted when this is accomplished.