Stationarity of the EEG Segment with Event-Related Potentials
| Periodical | Applied Mechanics and Materials (Volumes 148 - 149) |
|---|---|
| Main Theme | Mechanical Engineering, Materials and Energy |
| Edited by | Grace Chang |
| Pages | 30-33 |
| DOI | 10.4028/www.scientific.net/AMM.148-149.30 |
| Citation | Gai Ling Fan et al., 2011, Applied Mechanics and Materials, 148-149, 30 |
| Online since | December, 2011 |
| Authors | Gai Ling Fan, Zhi Hua Huang |
| Keywords | EEG, ERPs, Run Test, Stationarity |
| Price | US$ 28,- |
EEG (electroencephalography), as a noninvasive and inexpensive method, is widely used to measure brain function and make inferences about regional brain activity. The stationarity of EEG has been investigated by many researchers, while the stationarity of EEG segment with ERPs (Event-related Potentials) has hardly been concerned about. It is necessary to analyze the stationarity of this kind of EEG. In this paper, we concentrate on the stationarity of the EEG with ERPs by testing the stationarity of 500ms EEG segments with ERPs recorded from six subjects in two types of experiments. The results suggest that selected EEG segment whose length is larger than 190ms remains to be stationarity and all epochs duration less than 40ms is considered to be stationary, whichever channel the data is from and whatever type of cognitive task is performed in the experiment. This is an obvious difference between the stationarity of EEG with ERPs and that of EEG, which is reported to be stationary as long as its length is less than 12s.
