Psychophysiological responsivity to trauma and internal resources in patients with PTSD and healthy subjects

Description

This study aims to measure psychophysiological parameters during activation of internal resources k g . positive memories) and to compare these to activated traumatic internal networks. Antecedent studies show that traumatic stimulation on patients with posttraumatic stress disorder (PTSD) finalizes in various psychophysiological correlates. During therapy of these patients a strong demand for activation of internal resources, i.e. activation of fortitude and positives thoughts, exists. Especially EMDR therapy uses resource stimulating elements such as position of power and absorption in preparation for exposure. In this study standardized EMDR protocols establish a solid basis to explore individual internal resources. Researches on trauma stimuli in EMDR- patients show effects on parasympathetic tonus (Sack 2006) as well as increased cerebral blood flow in defined brain regions (Levin 1999. Lamprecht 2000). Especially the heart rate variability (HRV) may describe the sympatheticovagal balance (Cohen, 2002, Porges 1991). This study focuses on psychophysiological effects and neurobiological regulative mechanisms of stabilizing methods and activation of internal resources in PTSD patients and healthy control group. Methods: Healthy subjects and patients with diagnosed PTSD (DIAX) listened to a commonly neutral script, an individual trauma script and an individual absorption script. Following each script measurements of heart rate variability (HRV), respiratory flow, skin conductance responses (SCR) and skin blood flow (LCF, TU50%) took place. Results: Preliminary results revealed a significant reduced heart rate variability in patients compared to the healthy controls in reaction to the stress script as well as to the positive and the neutral scripts. Conclusion: To our knowledge this is the first time to be proven that altered autonomous functions are found in PTSD not only in reaction to traumatic reminders, but even to a positive, resource activation situation. This provides our basement for further research. Detailed analysis of different effects to each script on both groups are currently underway.

Format

Conference

Language

English

Author(s)

J. Schellong

Original Work Citation

Schellong, J. (2010, June). Psychophysiological responsivity to trauma and internal resources in patients with PTSD and healthy subjects. In Research. Symposium conducted at the 11th EMDR Europe Association Conference, Hamburg, Germany

Collection

Citation

“Psychophysiological responsivity to trauma and internal resources in patients with PTSD and healthy subjects,” Francine Shapiro Library, accessed December 2, 2021, https://emdria.omeka.net/items/show/19867.

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