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Table 3 Correlation coefficients between the age of commencing piano training and individual movement variables during the repetitive keystrokes

From: Early optimization in finger dexterity of skilled pianists: implication of transcranial stimulation

 

Index

Middle

Ring

Little

IKI-mean

IKI-SD

CD-mean

CD-SD

IKI-mean

IKI-SD

CD-mean

CD-SD

IKI-mean

IKI-SD

CD-mean

CD-SD

IKI-mean

IKI-SD

CD-mean

CD-SD

Right

RaLc

0.24

−0.77

0.21

−0.45

0.38

−0.05

−0.17

−0.27

0.40

−0.44

−0.25

0.22

−0.51

−0.08

−0.47

−0.19

RcLa

−0.41

−0.50

−0.31

−0.20

0.05

0.04

0.15

−0.24

0.04

0.09

0.07

−0.29

−0.47

−0.32

−0.06

−0.06

sham

0.39

0.42

−0.27

0.05

−0.21

0.16

0.27

0.00

0.02

−0.37

0.43

0.07

−0.32

−0.20

−0.10

0.16

Left

RaLc

−0.05

−0.04

−0.55

−0.50

0.25

0.33

0.33

0.46

−0.17

0.02

−0.37

0.35

−0.35

−0.15

−0.69

0.03

RcLa

−0.31

0.01

−0.14

0.02

−0.14

−0.60

0.15

−0.22

−0.07

−0.35

−0.20

0.11

−0.25

−0.06

−0.08

0.41

sham

−0.33

−0.36

0.36

−0.14

−0.20

0.40

0.30

0.43

−0.03

0.41

−0.06

0.28

0.21

0.27

−0.28

−0.03

  1. IKI: inter-keystroke interval, CD: finger-key contact duration.
  2. A number in bold indicates a significant correlation (p < 0.05).