Felmingham, KL and Rennie, C and Gordon, E and Bryant, RA, Autonomic and cortical reactivity in acute stress disorder and posttraumatic stress disorder, Biological Psychology, 90, (3) pp. 224-227. ISSN 0301-0511 (2012) [Refereed Article]
Copyright 2012 Elsevier B.V.
Official URL: http://dx.doi.org/10.1016/j.biopsycho.2012.03.011
This study investigated attention (P300 amplitude) and orienting (skin conductance amplitude) to auditory tones in a standard oddball task in early trauma-exposed groups (Acute Stress Disorder: ASD) (n = 12)or no ASD (n = 13), compared to individuals with chronic posttraumatic stress disorder (PTSD) (n = 17) and non-trauma-exposed controls (n = 17). Individuals with ASD displayed significantly higher SCR and P3 amplitudes to target tones than individuals with PTSD, non-traumatized controls, and traumatized controls.
These findings suggest that attention and orienting responses are greater to neutral, task-relevant target tones in ASD than PTSD and traumatized and non-traumatized controls.
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