Performance Norms on NPPAB for Limited Drug Use in Males (NPPABNRM)
Final rept. 15 Nov 1989-30 Sep 1992
NATIONAL INST ON DRUG ABUSE BALTIMORE MD ADDICTION RESEARCH CENTER
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A Neurophysiological Performance Assessment Test NPAT battery of sensory and cognitive event-related potential ERP tasks was designed by the office of Military Performance Assessment Technology OPMAT. Test-retest reliability data for cognitive ERPs for tasks in this battery was obtained from 37 normal subjects. The test-retest reliability of Nl, P2 and P3 components of cognitive event-related potential were determined for the auditory rare event monitoring task, two Continuous Performance tasks and the Sternberg Memory task with two set sizes. The Cronbach alpha coefficient was used to test within day 2 tests on the same day and between day reliability. The test-retest reliability of three components recorded in this battery of tasks was high .7 to .9. The reliability of the P3 amplitude measurements exceeded the reliability of the percent correct values in all tasks except the Sternberg memory task with a three letter set size. The measurement of the ERP components, in particular the P3, in this battery of cognitive tasks appears stable enough to build norms for the ERPs components for each of the tasks in the battery. Such normative ERP data will be useful in the application of NPAT battery. Not only was the test-reliability of the ERPs data high, but in using this normative ERP data we were able to identify cognitive processing alterations in a group of drug abusers N10 who denied illicit drug use.
- Anatomy and Physiology