Article 1 Cardiovascular disease 1 Extinction 1 Fear memory PTSD 1 Pavlovian fear conditioning 1 Physiological hyperarousal 1 adult 1 animal experiment 1 animal tissue 1 cardiovascular disease 1 cardiovascular response 1 comorbidity 1 conditioned reflex 1 conditioned response anxiety test 1 controlled study 1 disease model 1 exposure therapy 1 fear 1 fear conditioning test 1 fear extinction 1 heart rate 1 male 1 mean arterial pressure 1 mouse 1 nonhuman 1 posttraumatic stress disorder 1 reinforcement 1 therapy effect 1