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The Relationship Between Prestimulus Alpha Amplitude and Visual Evoked Potential Amplitude
| Content Provider | Scilit |
|---|---|
| Author | Brandt, Michael E. Jansen, Ben H. |
| Copyright Year | 1991 |
| Description | Journal: International Journal of Neuroscience Root-mean-square (RMS) amplitude derived from power spectral measures in the alpha band of the 1 s prestimulus EEG were related to the peak-to-peak amplitude of the N1 and P2 components (N1P2PP) of the visual evoked potential (VEP) in 7 male subjects. Stimuli were low intensity flashes delivered randomly between 2 and 6 whole seconds. Trials were rank ordered according to the levels of prestimulus alpha amplitude and were partitioned into groups of 40 trials each (25 groups per data set). Averaged VEPs were computed from these groups and scattergrams of N1P2PP and enhancement factor (following the approach by Basar, 1980) vs. prestimulus alpha amplitude were produced. There was a correlation of 0.74 (p <. 0001) between prestimulus alpha amplitude and N1P2PP, and all seven subjects displayed a general inverse relationship between VEP enhancement and prestimulus alpha amplitude, replicating the results of Basar. However, we observed an exponential relationship, rather than the linear relationship reported by Başar. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.3109/00207459108990744 |
| Ending Page | 268 |
| Page Count | 8 |
| Starting Page | 261 |
| ISSN | 00207454 |
| e-ISSN | 15435245 |
| DOI | 10.3109/00207459108990744 |
| Journal | International Journal of Neuroscience |
| Issue Number | 3-4 |
| Volume Number | 61 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: International Journal of Neuroscience Anesthesiology Prestimulus Eeg Visual Evoked Potential Vep Enhancement Factor |
| Content Type | Text |
| Subject | Neuroscience Medicine |
