0676 Increased Depression Symptoms are Associated with Higher Nightmare Frequency within the Wisconsin Sleep Cohort-V45IS1 0676 Increased Depression Symptoms are Associated with Higher Nightmare Frequency within the Wisconsin Sleep Cohort-V45IS1 Download 0675 Vagal Activity in REM Sleep Is Associated With Extinction Recall in Trauma Exposed Individuals but Not in Individuals With Post-Traumatic Stress Disorder-V45IS1 0677 Impact of Cognitive Behavioral Therapy for Post-trauma Nightmares on Sleep-efficiency: Examining Data on Sleep Diary Data-V45IS1