Title :
Analysis of VEP using phase information
Author :
Micheli-Tzanakou, Evangelia ; Pavlopoulos, Sotirios
Author_Institution :
Dept. of Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA
Abstract :
Although VEP (visual evoked potential) is an electrophysiological test commonly used in investigating different neurophysiological disorders, there are not many objective criteria for distinguishing a normal from an abnormal VEP. The authors used the phase characteristics of the power spectrum for the distinction of VEPs. The phase spectrum of a VEP was proved to have a certain periodicity in the 0-40-Hz region. By studying the phase characteristics of VEP waveforms, the authors were able to determine the range of the period that characterizes normal and abnormal VEPs and to establish an experimental method for distinguishing the different populations.<>
Keywords :
bioelectric potentials; patient diagnosis; vision; 0 to 40 Hz; VEP; abnormal VEP; diagnostic purposes; electrophysiological test; neurophysiological disorders; normal VEP; phase information; phase spectrum; power spectrum; visual evoked potential;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94817
