Table 2. Summary of the seven descriptors considered in this study, depending on the condition.

	CONDITION
	1:1_ISO_SYNC		1:4_ISO_SYNC	NONISO_SYNC	ISO_REPRO		REACT
	1st cycle	2nd and 3rd cycles	2nd and 3rd cycles	2nd and 3rd cycles	1st cycle	2nd and 3rd cycles	2nd and 3rd cycles
Parameters extracted for each tap
Reaction Time (RT)							x
Phase Angle (PA)
• In general, for all taps	x	x
• Distinguished for
strong beats		x	x	x
weak beats		x	x	x
taps falling “half beat”				x
Tapping Force (TF)
• In general, for all taps		x		x		x
• Distinguished for
strong beats		x	x	x
weak beats		x	x	x
taps falling “half beat”				x
Parameters extracted for each train of taps
Reaction Time Variability (RT_var)							x
Phase Locking Value (PLV)
• In general, for all taps	x	x
• Distinguished for
strong beats		x	x	x
weak beats		x	x	x
taps falling “half beat”				x
Drift in ITI over time					x
Coefficient of Variation (CV)		x			x	x
Periodicity Error (PE)					x	x
Tapping Force Variability (TF_var)		x		x		x