Table 4 Comparison of quantitative EEG indicators outcomes in the KI-BCI group, tDCS group, and tDCS-BCI group.

From: Efficacy of kinesthetic motor imagery based brain computer interface combined with tDCS on upper limb function in subacute stroke

Variable/

group

Pre-

intervention

Post-

intervention

Main effect

(Time) F(p)

Main effect

(Group) F(p)

Interaction effect

(Time*Group) F(p)

DTABR

 KI-BCI

3.67 ± 1.01

6.13 ± 2.58

0.064

(0.805)

0.583

(0.565)

2.918

(0.072)

 tDCS

5.32 ± 1.37

2.35 ± 0.42a

 BCI-tDCS

4.85 ± 1.41

6.41 ± 2.18

DAR

 KI-BCI

3.39 ± 1.04

5.30 ± 3.10

0.003

(0.960)

0.391

(0.681)

1.732

(0.197)

 tDCS

4.79 ± 1.44

1.78 ± 0.45a

 BCI-tDCS

4.42 ± 1.42

5.70 ± 2.04

DABR

 KI-BCI

2.75 ± 0.82

4.35 ± 2.44

0.008

(0.930)

0.421

(0.661)

1.839

(0.179)

 tDCS

4.05 ± 1.23

1.55 ± 0.38a

 BCI-tDCS

3.74 ± 1.24

4.92 ± 1.78

  1. KI-BCI: kinesthetic imagery-based brain computer interface; tDCS: transcranial direct current stimulation; EEG: electroencephalographic; DTABR: δ + θ/α + β power ratio; DAR: δ/α power ratio; DABR: δ/β power ratio; aDifference of baseline (P < 0.05).
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