Table 2 Quantitative EEG analysis in COVID-19 survivors versus the healthy control

Frontal Absolute power

Frontal Theta

22.2/17.8

7.6/5.6

 < 0.001*

Frontal Alpha

6.1/4.8

6.7/6.4

0.3

Central Absolute power

Central Theta

21.3/15.5

7.8/4.2

 < 0.001*

Central Alpha

6.5/8.1

8.9/7.7

0.01*

Parietal Absolute power

Parietal Theta

21.3/21.2

8.6/5.6

 < 0.001*

Parietal Alpha P

10.5/10.02

16.5/15.7

 < 0.001*

Power ratio (theta/beta ratio)

C3

1.7/2.3

0.89/0.46

 < 0.001*

C4

1.5/2.2

0.96/0.38

 < 0.001*

P3

1.7/1.9

0.86/0.45

 < 0.001*

P4

1.4/2.2

0.92/0.7

 < 0.001*

Interhemispheric coherence

F3/F4

Alpha

20.2/14.03

54.7/35.5

 < 0.001*

Beta

14.1/20.8

28.8/30.4

 < 0.001*

C3/C4

Alpha

23.6/26.03

25/22.2

0.02*

Beta

19.9/22.7

26.1/25.9

0.03*

P3/P4

Alpha

22.7/17.3

38.9/12.2

 < 0.001*

Beta

14.1/23.5

31.9/22.1

 < 0.001*