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Table 13 Extended version of metrics from EEG-EMG coherence (CMC) and main findings related to motor function

From: Literature review of stroke assessment for upper-extremity physical function via EEG, EMG, kinematic, and kinetic measurements and their reliability

Correlation with clinical measures

EEG metric

Severity

Stage

Age mean (std), [range]

Stroke type

M/F

# Sub

Year

Author

Ref.

Flexion synergy

Beta, Gamma CMC

MMSE: 28(1)*

Chronic

54.5(6.9)

NA

1/11

12

2018

Pan

[93]

FMUE

Beta, Gamma CMC

FMUE: 16.2(6.8)

Chronic

57(11)

IS(3) and HS(5)

1/7

8

2017

Belardinelli

[37]

Function recovery, FMA-UE

Beta CMC

FMUE: 15

Subacute

35

NA

0/1

1

2018

Zheng

[141]

Compensation of healthy limb

Gamma interhemispheric disparity

ARAT: [10 30]

Chronic

52(8.1)

NA

5/6

11

2018

Bao

[145]

Characterization of CMC from stage to stage

CMC frequency peak

MMSE: 27(2)*

Acute to chronic

71(11)

IS

6/6

11

2014

Von Carlowitz-Ghori

[146]

Non-significant differences among stages

CMC frequency peak

mild to moderate hand weakness

Chronic

59(15)

IS

2/13

15

2017

Larsen

[112]

Co-contraction

CMC frequency peak

FMUE: 33.6(10), MAS: 1.3(0.8),1.4(0.7),1.6(0.6)**

Chronic

56.5(9.5)

IS(7) and HS (7)

3/11

14

2020

Guo

[149]

FMUE

CMC topographical patterns

FMUE: 55

Acute to chronic

58.3 [52 64]

IS

NA

11

2016

Krauth

[144]

Level of impairment

CMC topographical patterns

ARAT: 45(19)

Subacute

52(14)

NA

6/19

25

2013

Rossiter

[142]

  1. IS ischemic stroke, HS hemorrhagic stroke, M male, F female, * MMSE: mini mental state examination score, ** MAS finger, wrist, elbow