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  • Title: Psychophysiological assessment of posttraumatic stress disorder imagery in World War II and Korean combat veterans.
    Author: Orr SP, Pitman RK, Lasko NB, Herz LR.
    Journal: J Abnorm Psychol; 1993 Feb; 102(1):152-9. PubMed ID: 8436691.
    Abstract:
    We assessed the heart rate, skin conductance, and left lateral frontalis electromyographic responses of World War II (WWII) and Korean War male veterans to recollection of their combat experiences by using a script-driven imagery technique previously validated in Vietnam veterans (Pitman et al., 1990; Pitman, Orr, Forgue, de Jong, & Claiborn, 1987). Medication-free subjects were classified on the basis of criteria from the revised third edition of the Diagnostic and Statistical Manual of Mental Disorders into posttraumatic stress disorder (PTSD; n = 8) and non-PTSD (n = 12) groups, which did not differ in overall combat exposure or severity of personal combat events. PTSD subjects' physiological responses during personal combat imagery were markedly larger than those of non-PTSD subjects', even though the self-reported emotional responses of the two groups were comparable. A physiological discriminant function derived from Vietnam veterans (Orr et al., 1990) correctly classified 7 of the 8 PTSD subjects (sensitivity was 88%) and 12 of the 12 non-PTSD subjects (specificity was 100%; p < .001).
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