Analysis of Electrophysiological Signals from Animals Subjected to Biodynamic Stress.

摘要

The objective of the signal analysis and data processing reported here was to detect and evaluate the effects of impact acceleration on the functional integrity of the nervous system as revealed by electrophysiological recordings. Evoked potential methods were used to evaluate the effects of impact acceleration on afferent nerve impulse transmission. The methods of period analysis, concordance, and power spectra were used to study the effect of impact acceleration on background EEG activity. Consistent impact dose related effects were observed on the time course of recovery of the amplitude and latency of evoked response components measured from single and small sample average evoked potentials. The analysis of background EEG activity showed clear changes between pre- and post-acceleration, but the magnitude of these changes did not show a consistent relationship to the level of acceleration. (Author)