2 documents found, page 1 of 1
Tonic immobility in PTSD : exacerbation of emotional cardiac defense response.
Norte, Carlos Eduardo; Volchan, Eliane; Vila, Jaime; Mata, José Luís; Arbol, Javier Rodriguez; Mendlowicz, Mauro Vítor; Berger, WilliamAmong defensive behaviors, tonic immobility (TI) is considered the last defensive resort when life is at extreme risk. Post-Traumatic Stress Disorder (PTSD) is the main psychiatric consequence resulting from exposure to traumatic events. Increasing evidence indicate an association between peritraumatic tonic immobilility and severity of PTSD. Cardiac defense response, a reactivity to perceived danger or threat,...
Is there tonic immobility in humans? Biological evidence from victims of trauma...
Volchan, Eliane; Souza, Gabriela Guerra Leal de; Franklin, Camila Martins; Norte, Carlos Eduardo; Rego, Vanessa da Rocha; Oliveira, José Magalhães deTonic immobility, characterized by profound motor inhibition, is elicited under inescapable threat in many species. To fully support the existence of tonic immobility in humans, our aim was to elicit this reaction in a laboratory setting and measure it objectively. To mimic exposure to life-threatening events in the lab, trauma-exposed participants with PTSD (n = 18) and without PTSD (n = 15) listened to the sc...