Meta-Analytic Review of P3 Components in Posttraumatic Stress Disorder and Their Clinical Utility
| Autor: | T. N. Allana, James D. Johnson, M. D. Medlin, E. W. Harris, Anke Karl |
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| Rok vydání: | 2013 |
| Předmět: |
Working memory
Latency Period Psychological Electroencephalography Context (language use) General Medicine Random effects model Event-Related Potentials P300 behavioral disciplines and activities Diagnosis Differential Stress Disorders Post-Traumatic Clinical trial Posttraumatic stress P3a Neurology Meta-analysis mental disorders P3b Humans Attention Neurology (clinical) Psychology Clinical psychology |
| Zdroj: | Clinical EEG and Neuroscience. 44:112-134 |
| ISSN: | 2169-5202 1550-0594 |
| DOI: | 10.1177/1550059412469742 |
| Popis: | Patients with posttraumatic stress disorder (PTSD) exhibiting disturbances in information processing, including trouble with attention, were studied. Event-related potentials (ERPs)—specifically, the P3 components (P3a, P3b, and P3 working memory {P3wm})—provide an objective, non-invasive, and cost-effective method for evaluating such disturbances. We evaluated the potential clinical utility of P3 components by examining the differences between PTSD and several control groups: normal participants, non-PTSD patients with trauma, and medicated patients with PTSD. We performed a meta-analysis of the ERP literature between 1990 and 2010 using a random effects model. P3a amplitude was larger in patients with PTSD compared to non-PTSD patients having trauma in the context of trauma-related distracters. P3b amplitude was also larger in patients with PTSD than in patients having trauma without PTSD, but in the context of trauma-related stimuli. P3b amplitude was smaller in patients with PTSD compared to normal controls in the context of neutral stimuli. P3wm signals were smaller with shorter latencies in patients with PTSD compared to normal controls or medicated patients with PTSD. The receiver–operator characteristic (ROC) analysis revealed that each P3 component had some potential to accurately classify patients, typically using amplitude for at least one lead. In conclusion, differences in P3 amplitude and latency between patients with PTSD and control patients confirm the results of Karl et al and extend our understanding of P3 as a neural correlate of working memory. These results further provide guidance on the potential design of future clinical trials supporting the development of P3 components as a PTSD diagnostic aid. |
| Databáze: | OpenAIRE |
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