Literature DB >> 12206295

Event-related potentials to auditory stimuli in female Vietnam nurse veterans with posttraumatic stress disorder.

Linda J Metzger1, Margaret A Carson, Lynn A Paulus, Natasha B Lasko, Stephen R Paige, Roger K Pitman, Scott P Orr.   

Abstract

Individuals with posttraumatic stress disorder (PTSD) have been found to show several event-related brain potential (ERP) abnormalities including reduced target P3b amplitude, P50 suppression, and P2 amplitude/intensity slope. Female Vietnam nurse veterans with (n = 29) and without (n = 38) current PTSD completed P50 paired-click, three-tone "oddball" and four-tone stimulus-intensity modulation procedures. Opposite to previous findings, the current PTSD group had larger target P3b amplitudes and increased P2 amplitude/intensity slopes. Reduced P50 suppression was associated with increased severity of general psychopathology, but not with PTSD diagnosis. Findings suggest that target P3b amplitude and P2 amplitude/intensity slope abnormalities reflect different pathophysiological processes. Future research is needed to determine whether the opposite ERP abnormalities observed in this PTSD sample reflect gender-, trauma-, or sample-specific findings.

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Year:  2002        PMID： 12206295     DOI： 10.1017/S0048577202001002

Source DB:  PubMed          Journal:  Psychophysiology        ISSN： 0048-5772            Impact factor:   4.016


  10 in total

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4.  Intensity dependence of auditory P2 in monozygotic twins discordant for Vietnam combat: associations with posttraumatic stress disorder.

Authors:  Linda J Metzger; Roger K Pitman; Gregory A Miller; Stephen R Paige; Scott P Orr
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5.  Event-related potentials to auditory stimuli in monozygotic twins discordant for combat: association with PTSD.

Authors:  Linda J Metzger; C Richard Clark; Alexander C McFarlane; Melinda D Veltmeyer; Natasha B Lasko; Stephen R Paige; Roger K Pitman; Scott P Orr
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7.  An event-related potential study of attention deficits in posttraumatic stress disorder during auditory and visual Go/NoGo continuous performance tasks.

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8.  Lateralized abnormalities in auditory M50 sensory gating and cortical thickness of the superior temporal gyrus in post-traumatic stress disorder: preliminary results.

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9.  Identifying Electrophysiological Prodromes of Post-traumatic Stress Disorder: Results from a Pilot Study.

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  10 in total

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