Table 2.
Relation between EEG coherence in the frontoparietal electrode pair and ED in PD patients.
| Range | Age-controlled standardized BADS score | p | ||
|---|---|---|---|---|
| <70 (patients with ED) | ≥70 (patients without ED) | |||
| Alpha | Low F3-P3 (left side) coherence group | 13 | 26 | 0.016∗ |
| High F3-P3 (left side) coherence group | 2 | 27 | ||
| Low F4-P4 (right side) coherence group | 11 | 22 | 0.041∗ | |
| High F4-P4 (right side) coherence group | 4 | 31 | ||
|
| ||||
| Theta | Low F3-P3 (left side) coherence group | 12 | 38 | 0.742 |
| High F3-P3 (left side) coherence group | 3 | 15 | ||
| Low F4-P4 (right side) coherence group | 8 | 32 | 0.768 | |
| High F4-P4 (right side) coherence group | 7 | 21 | ||
Data are expressed as number of patients.
BADS: Behavioral Assessment of the Dysexecutive Syndrome; ED: executive dysfunction; PD: Parkinson's disease.
ED was defined as age-controlled standardized BADS score <70.
The low coherence group had coherence <0.5 and the high coherence group had coherence ≥0.5.
The relation between two coherence groups and ED was assessed using Fisher's exact test. ∗Statistically significant (p < 0.05).