From: Electrophysiological biomarkers of central nervous system affection in cases of chronic obstructive pulmonary disease (COPD)
COPD
Control
P value
N
%
EEG
Normal
32
80
29
96.67
0.039*
Abnormal
Total
8
20
1
3.3
Focal
5
62.5
100
Geralizied
3
37.5
0