Accession Number : ADP006098

Title :   Evoked Potential Analysis of Impact Acceleration Experiments,

Corporate Author : NAVAL BIODYNAMICS LAB NEW ORLEANS LA

Personal Author(s) : Matson, David L. ; Weiss, Marc S.

Report Date : FEB 1988

Pagination or Media Count : 13

Abstract : This report focuses on the use of somatosensory evoked potentials (SEPs) as an assessment tool for transient injury in rhesus macaques undergoing impact acceleration in the - Gx direction. Adult male rhesus macaques, seated on a sled and restrained (except for the head and neck), were accelerated at peak sled accelerations ranging from 95.5 to 1039.6 m/sec2. The sled was decelerated by friction forces ranging from 0.7 to 3.0 m/sec2. Somatosensory stimuli were delivered prior to, during, and after impact. Amplified SEP activity was telemetered and recorded on magnetic tape. The raw SEP data were digitized and analyzed off-line. Results for cortical SEPs are consistent with and extend previous analyses, suggesting a threshold for transitory changes in cervical SEP latencies in macaques at peak -Gx sled accelerations below 550 m/sec2. (js)

Descriptors :   *WOUNDS AND INJURIES, ADULTS, IMPACT ACCELERATION, IMPACT TESTS, MACAQUE MONKEYS, MAGNETIC TAPE, MALES, NECK(ANATOMY), PEAK VALUES, RHESUS MONKEYS, TRANSIENTS.

Subject Categories : Psychology
      Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE