Table A1.

r² values of the electrode with the highest r² (denoted in parentheses) for every subject, movement, and direction. Average is mean ± 1 sd. The Amplitude r² were derived from data of all speeds as well as the zero-speed holding epochs between the movements, whereas the Duration r² were only derived from movement data

Amplitude	PG		E		SFE
Subject	Flex	Extd	Flex	Extd	Flex	Extd
1	0.41 (#37)	0.72 (#37)	0.72 (#28)	0.81 (#27)	0.72 (#10)	0.82 (#26)
2	0.77 (#43)	0.80 (#44)	0.85 (#52)	0.89 (#42)	0.90 (#49)	0.90 (#50)
3	0.75 (#42)	0.75 (#37)	0.81 (#57)	0.72 (#57)	0.75 (#57)	0.71 (#57)
4	0.77 (#51)	0.83 (#42)	0.81 (#59)	0.85 (#41)	0.64 (#59)	0.73 (#41)
5	0.61 (#14)	0.70 (#14)	0.72 (#48)	0.66 (#48)	0.69 (#48)	0.78 (#48)
6	0.74 (#64)	0.85 (#46)	0.85 (#38)	0.86 (#38)	0.90 (#39)	0.85 (#64)
7	0.72 (#9)	0.65 (#7)	0.77 (#45)	0.71 (#44)	0.66 (#45)	0.47 (#44)
Average	0.68±0.13	0.76±0.07	0.79±0.06	0.78±0.09	0.75±0.11	0.75±0.14
Duration	PG		E		SFE
Subject	Flex	Extd	Flex	Extd	Flex	Extd
1	0.71 (#37)	0.82 (#37)	0.95 (#28)	0.95 (#28)	0.92 (#10)	0.94 (#19)
2	0.89 (#24)	0.91 (#24)	0.99 (#50)	0.98 (#52)	0.96 (#49)	0.96 (#49)
3	0.65 (#37)	0.52 (#59)	0.73 (#57)	0.57 (#57)	0.40 (#57)	0.44 (#23)
4	0.90 (#61)	0.89 (#46)	0.76 (#35)	0.74 (#33)	0.66 (#54)	0.55 (#33)
5	0.75 (#14)	0.62 (#14)	0.53 (#48)	0.26 (#9)	0.45 (#54)	0.36 (#59)
6	0.57 (#55)	0.74 (#64)	0.58 (#38)	0.54 (#38)	0.88 (#38)	0.71 (#64)
7	0.36 (#20)	0.40 (#35)	0.48 (#45)	0.62 (#45)	0.54 (#44)	0.46 (#44)
Average	0.69±0.19	0.70±0.20	0.72±0.20	0.67±0.25	0.69±0.23	0.63±0.24