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Combat veterans with posttraumatic stress disorder exhibit decreased habituation of the P1 midlatency auditory evoked potential. 1997

G M Gillette, and R D Skinner, and L M Rasco, and E M Fielstein, and D H Davis, and J E Pawelak, and T W Freeman, and C N Karson, and F A Boop, and E Garcia-Rill
Vanderbilt University Medical Center, Department of Psychiatry, Nashville, TN, USA. gillette.gregory@nashville.va.gov

The current study used a paired stimulus paradigm to investigate the P1 midlatency auditory evoked potential in Vietnam combat veterans with posttraumatic stress disorder (PTSD) and three comparison groups: alcohol dependents, combat-exposed normals, and combat-unexposed normals. Compared to each comparison group, PTSD subjects exhibited significantly diminished habituation of the P1 potential. P1 potential habituation within the PTSD group, correlated significantly with intensity of PTSD reexperiencing symptoms, such as trauma-related nightmares and flashbacks. These findings are discussed as consistent with a sensory gating defect at the brainstem level in PTSD, and are further discussed in the context of other psychophysiological measures in PTSD and of P1 potential findings in psychiatric disorders other than PTSD.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009483 Neuropsychological Tests Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury. Aphasia Tests,Cognitive Test,Cognitive Testing,Cognitive Tests,Memory for Designs Test,Neuropsychological Testing,AX-CPT,Behavioral Assessment of Dysexecutive Syndrome,CANTAB,Cambridge Neuropsychological Test Automated Battery,Clock Test,Cognitive Function Scanner,Continuous Performance Task,Controlled Oral Word Association Test,Delis-Kaplan Executive Function System,Developmental Neuropsychological Assessment,Hooper Visual Organization Test,NEPSY,Neuropsychologic Tests,Neuropsychological Test,Paced Auditory Serial Addition Test,Repeatable Battery for the Assessment of Neuropsychological Status,Rey-Osterrieth Complex Figure,Symbol Digit Modalities Test,Test of Everyday Attention,Test, Neuropsychological,Tests, Neuropsychological,Tower of London Test,Neuropsychologic Test,Test, Cognitive,Testing, Cognitive,Testing, Neuropsychological,Tests, Cognitive
D011930 Reaction Time The time from the onset of a stimulus until a response is observed. Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D005072 Evoked Potentials, Auditory The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS. Auditory Evoked Potentials,Auditory Evoked Response,Auditory Evoked Potential,Auditory Evoked Responses,Evoked Potential, Auditory,Evoked Response, Auditory,Evoked Responses, Auditory,Potentials, Auditory Evoked
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000704 Analysis of Variance A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable. ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D013313 Stress Disorders, Post-Traumatic A class of traumatic stress disorders with symptoms that last more than one month. Moral Injury,Neuroses, Post-Traumatic,PTSD,Post Traumatic Stress Disorder,Post-Traumatic Stress Disorders,Acute Post-Traumatic Stress Disorder,Chronic Post-Traumatic Stress Disorder,Delayed Onset Post-Traumatic Stress Disorder,Neuroses, Posttraumatic,Posttraumatic Stress Disorders,Stress Disorder, Post Traumatic,Stress Disorders, Posttraumatic,Acute Post Traumatic Stress Disorder,Chronic Post Traumatic Stress Disorder,Delayed Onset Post Traumatic Stress Disorder,Injury, Moral,Moral Injuries,Neuroses, Post Traumatic,Post Traumatic Stress Disorders,Post-Traumatic Neuroses,Post-Traumatic Stress Disorder,Posttraumatic Neuroses,Posttraumatic Stress Disorder,Stress Disorder, Post-Traumatic,Stress Disorder, Posttraumatic
D014728 Veterans Former members of the armed services. Veteran
D014744 Vietnam A country in southeastern Asia, bordering the Gulf of Thailand, Gulf of Tonkin, and South China Sea, as well as China, Laos, and Cambodia. The capital is Hanoi. North Vietnam,Viet Nam,Vietnam, Republic of

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