Correlative study on five items of brain evoked potentials

Objective In order to increase the efficiency of electrophysiological indicators. Methods The 43 electrophysiological indexes of auditory brainstem response, auditory evoked potentials, visual evoked potentials, event-related potential P 300 , and contingent negative variation were collected from 33 normal subjects. The data were analyzed using the major component analysis (MCA) by SPSS software. Results There were 9 major components extracted, which represented 90.0% of information from the original data. Conclusions The application of the extracted major components could represent the primary electrophysiological indexes, and should be put into consideration in the future studies of brain evoked potential.