Table 2.
Columns 2–4: Details of the transformations of condensation, harmonics and low-pass filtering assessed visually between the PLED and normal (non-PLED) EEG spectra in the patient group (22 with regular PLEDs from the initial group of 25). Columns 5–8: Corresponding metrics of narrowness (standard deviation = √variance) and peaked-ness (kurtosis) of the spectra about the most prominent peak (the mode). Standard deviations are smaller and kurtosis larger in the patient group, both differences confirmed statistically significant (see text). L-P: low-pass; Mode-STD: standard deviation about the mode; Mode-Kurt: Kurtosis about the mode.
| Pt # | Condensation | Harmonics | L-P filtering | Mode-STD (PLED) | Mode-STD (non-PLED) | Mode-Kurt (PLED) | Mode-Kurt (non-PLED) |
|---|---|---|---|---|---|---|---|
| 1. | + | + | + | 4.8 | 5.5 | 6.32 | 4.12 |
| 2. | + | − | − | 3.38 | 2.98 | 12.23 | 14.4 |
| 3. | |||||||
| 4. | + | + | + | 3.75 | 4.95 | 7.02 | 4.53 |
| 5. | + | + | − | 3.02 | 2.98 | 10.91 | 11.63 |
| 6. | + | − | + | 2.05 | 2.03 | 23.65 | 16.78 |
| 7. | + | + | − | 3.37 | 2.94 | 11.48 | 8.15 |
| 8. | + | − | + | 3.06 | 4.05 | 10.46 | 3.10 |
| 9. | + | − | − | 3.43 | 4.4 | 10.66 | 7.15 |
| 10. | |||||||
| 11. | + | − | + | 3.93 | 4.82 | 9.21 | 5.93 |
| 12. | + | − | + | 3.03 | 3.62 | 6.23 | 4.66 |
| 13. | + | + | − | 3.32 | 3.23 | 10.58 | 9.19 |
| 14. | + | − | + | 3.73 | 5.36 | 4.31 | 3.97 |
| 15. | + | − | − | 2.46 | 2.99 | 9.91 | 7.02 |
| 16. | + | − | + | 3.27 | 4.47 | 7.62 | 5.7 |
| 17. | + | − | + | 4.65 | 5.03 | 4.83 | 3.81 |
| 18. | |||||||
| 19. | + | − | + | 3.92 | 4.24 | 10.48 | 7.28 |
| 20. | + | − | + | 4.16 | 6.46 | 8.68 | 3.53 |
| 21. | + | − | + | 4.54 | 5.25 | 6.01 | 4.87 |
| 22. | + | − | + | 3.78 | 5.49 | 5.65 | 3.92 |
| 23. | + | + | − | 4.16 | 5.31 | 7.21 | 5.03 |
| 24. | + | − | + | 4.22 | 6.07 | 4.35 | 3.14 |
| 25. | + | − | + | 3.49 | 6.15 | 6.82 | 3.74 |
| MEAN VALUES | 3.61 | 4.47 | 8.85 | 6.44 | |||