Table I.
Relative spectral power in the theta band and beta band for control subjects and alpha1 band for patients with PD
| Relative power | Rest | Odor | P‐value |
|---|---|---|---|
| Theta (4–8 Hz) | Control subjects | ||
| Overall | 0.1689 | 0.1735 | 0.015 |
| LC | 0.1505 | 0.1556 | 0.045 |
| LF | 0.1982 | 0.2017 | 0.233 |
| LO | 0.1535 | 0.1557 | 0.390 |
| LP | 0.1394 | 0.1437 | 0.160 |
| LT | 0.1781 | 0.1836 | 0.045 |
| RC | 0.1461 | 0.1534 | 0.006 |
| RF | 0.2010 | 0.2060 | 0.104 |
| RO | 0.1559 | 0.1571 | 0.684 |
| RP | 0.1371 | 0.1418 | 0.120 |
| RT | 0.1809 | 0.1860 | 0.045 |
| Beta (13–30 Hz) | Control subjects | ||
| Overall | 0.3193 | 0.3119 | 0.015 |
| LC | 0.3817 | 0.3701 | 0.006 |
| LF | 0.2983 | 0.2911 | 0.092 |
| LO | 0.2999 | 0.2978 | 0.560 |
| LP | 0.3717 | 0.3664 | 0.287 |
| LT | 0.2664 | 0.2609 | 0.148 |
| RC | 0.3967 | 0.3859 | 0.015 |
| RF | 0.2978 | 0.2902 | 0.058 |
| RO | 0.3009 | 0.2948 | 0.075 |
| RP | 0.3832 | 0.3754 | 0.104 |
| RT | 0.2733 | 0.2662 | 0.043 |
| Alpha1 (8–10 Hz) | Patients with PD | ||
| Overall | 0.1174 | 0.1107 | 0.019 |
| LC | 0.1012 | 0.0941 | 0.019 |
| LF | 0.0903 | 0.0874 | 0.399 |
| LO | 0.1698 | 0.1600 | 0.051 |
| LP | 0.1353 | 0.1229 | 0.002 |
| LT | 0.1404 | 0.1312 | 0.022 |
| RC | 0.0851 | 0.0799 | 0.034 |
| RF | 0.0751 | 0.0732 | 0.403 |
| RO | 0.1610 | 0.1532 | 0.134 |
| RP | 0.1257 | 0.1143 | 0.011 |
| RT | 0.1262 | 0.1217 | 0.241 |
All P‐values are determined by a multilevel model, comparing all rest and stimulus epochs of control subjects or patients with PD. Analysis of regional changes was performed to explore the distribution of the odor‐induced changes within a frequency band. After Holm‐Bonferroni correction for multiple comparisons, only the LP regional P‐value in the alpha1 band remained significant.
L, left; R, right; C, central; F, frontal; O, occipital; P, parietal; T, temporal.