Fear of Sleep May Be a Core Symptom of Sympathetic Activation and the Drive for Vigilance in Posttraumatic Stress Disorder Fear of Sleep May Be a Core Symptom of Sympathetic Activation and the Drive for Vigilance in Posttraumatic Stress Disorder Download Evaluating Transfer of Modafinil Into Human Milk During Lactation: A Case Report Further Exploring the Associations Between Sympathetic Activation, Fear of Sleep, and Insomnia Symptoms in Posttraumatic Stress Disorder