section_path: Research/Models/Single prolonged stress
section_name: Single prolonged stress
paragraph_text: Single prolonged stress
  
  Single prolonged stress (SPS) is a fear model that is often used to study PTSD. Its paradigm involves multiple stressors such as immobilization, a force swim, and exposure to ether delivered concurrently to the subject. This is used to study non-naturalistic, uncontrollable situations that can cause a maladaptive fear responses that is seen in a lot of anxiety and traumatic based disorders.