Table 1 Mean (M) and standard deviation (SD) of PLI (Phase Locking Index) and IPC (Interbrain Phase Coherence) maxima across the 8 pairs of guitarists during the preparatory period of metronome setting and during the period of guitar playing separately for the 16 electrodes.

Metronome

PLI-A

M

.59

.64

.63

.63

.60

.58

.68

.65

.66

.65

.37

.50

.50

.48

.45

.34

SD

.07

.08

.08

.07

.06

.12

.10

.09

.10

.14

.04

.07

.08

.08

.10

.06

PLI-B

M

.55

.60

.59

.62

.56

.47

.62

.60

.63

.52

.40

.48

.49

.47

.37

.36

SD

.12

.11

.11

.12

.11

.10

.09

.09

.10

.09

.08

.11

.12

.12

.10

.06

IPC-AB

M

.44

.44

.42

.43

.43

.38

.46

.44

.45

.37

.37

.40

.40

.40

.35

.33

SD

.06

.06

.08

.08

.07

.07

.06

.08

.07

.04

.08

.10

.09

.07

.09

.06

IPC-BA

M

.41

.45

.43

.45

.37

.43

.47

.44

.46

.43

.31

.36

.37

.38

.35

.31

SD

.08

.09

.08

.07

.06

.09

.12

.08

.09

.10

.07

.08

.06

.05

.04

.04

Play onset

PLI-A

M

.57

.63

.61

.60

.53

.49

.57

.57

.58

.52

.45

.51

.50

.53

.52

.44

SD

.07

.06

.07

.06

.09

.11

.13

.10

.13

.12

.06

.13

.12

.15

.18

.14

PLI-B

M

.52

.59

.59

.57

.52

.55

.61

.61

.61

.52

.44

.49

.51

.54

.44

.43

SD

.05

.08

.10

.09

.10

.11

.11

.11

.09

.16

.08

.14

.15

.12

.09

.12

IPC-AB

M

.41

.44

.43

.42

.39

.39

.46

.46

.45

.38

.36

.39

.39

.40

.38

.36

SD

.09

.12

.13

.12

.11

.07

.10

.11

.10

.12

.08

.05

.05

.07

.10

.06

IPC-BA

M

.45

.48

.47

.47

.38

.40

.46

.46

.46

.37

.32

.38

.40

.42

.40

.32

SD

.12

.09

.08

.11

.11

.09

.11

.11

.10

.11

.05

.11

.10

.11

.11

.10