Table 4: Regression analysis between parameters of broad band by frequencies band and EEG derivation with disease duration.

Frequencies band and derivation

Spearman correlation coefficient

P

Freedom degree

AP alfa-C3

0.614

0.02

27

AP alfa-P3

0.581

0.03

27

AP beta-C4

-0.578

0.03

27

AP beta-F7

-0.625

0.02

27

AP beta-T3

-0.708

0.00

27

AP total-P3

0.672

0.01

27

AP total-Pz

0.603

0.02

27

RP beta-F7

-0.656

0.01

27

RP beta-C3

-0.647

0.01

27

RP beta-C4

-0.673

0.01

27

RP beta-P3

-0.695

0.00

27

RP beta-F7

-0.794

0.00

27

RP beta-F8

-0.696

0.00

27

RP beta-T3

-0.806

0.00

27

RP beta-T4

-0.635

0.01

27

MF- beta-Pz

-0.620

0.02

27

MF- total-C4

-0.611

0.02

27

*AP: Absolute Power; RP: Relative Power; MF: Mean Frequency.