Specific Aim 2: The ability for participants to regulate will be further challenged by explicit exposure to trauma relevant stimuli that elicit increased amygdala activation in patients with PTSD. The investigators will follow the same procedure as the previous aim except that free regulate condition (condition #3) will be replaced with conditions (4) trauma regulate shows a participant-specific trauma-relevant image and the thermometer that indicates true activation of ventromedial PFC minus amygdala while the participant attempts neuroregulation, and (5) neutral regulate shows a trauma-unrelated image and the thermometer that indicates true activation of ventromedial PFC minus amygdala while the participant attempts neuroregulation. The investigators will enroll 10 participants who will engage in a six weekly neurofeedback sessions to assess target engagement and dosing.