Table 1.
Individual absolute values of the median power frequency (MPF) at frontal locations (Fp1) and central location (C3) at pre- and post-exposure measurements (3 min each).
| Nr | MPF at Fp1 (Hz) | MPF at C3 (Hz) | ||||||
| Sham | Diesel | Sham | Diesel | |||||
| pre | post | pre | post | pre | post | pre | post | |
| 1 | 5.7 | 7.6 | 6.4 | 8.0 | 6.5 | 8.7 | 6.9 | 9.4 |
| 2 | 7.1 | 8.3 | 8.7 | 12.6 | 7.8 | 6.1 | 9.5 | 11.2 |
| 3 | 7.8 | 8.5 | 7.4 | 8.4 | 9.7 | 8.4 | 6.7 | 10.2 |
| 4 | 8.3 | 7.7 | 8.7 | 9 | 11.5 | 9.9 | 9 | 9.6 |
| 5 | 9.2 | 9.1 | 9.8 | 8.4 | 10.5 | 12.3 | 9.7 | 9.2 |
| 6 | 7.1 | 10.7 | 8.9 | 11 | 11 | 11 | 9.0 | 11.9 |
| 7 | 15.3 | 12.7 | 9.3 | 14.4 | 15.1 | 13.6 | 7.9 | 9.1 |
| 8 | 10.2 | 11 | 7.4 | 11.3 | 7.6 | 9.1 | 8.3 | 9.3 |
| 9 | 7.5 | 7.3 | 6.6 | 7.1 | 7 | 6.3 | 7.2 | 8.0 |
| 10 | 6.7 | 7 | 8.9 | 11.2 | 11.2 | 12.3 | 7.4 | 9.1 |
| Mean | 8.5 | 9.0 | 8.2 | 10.1a | 9.9 | 9.8 | 8.2 | 9.7a |
| SD | 2.7 | 1.9 | 1.2 | 2.3 | 2.6 | 2.6 | 1.1 | 1.1 |
Measurements were done before entering the exposure chamber and after completion of post-exposure interval, in exposure conditions sham and diesel.
a) Significantly different from pre-exposure, P < 0.02, Wilcoxon paired test