Table 1.

Summary of the experimental conditions, graded according to the demands of the specific stages of sensorimotor processing, i.e., cognitive, premotor, and motor processing

Task	Sensory processes		Cognitive processes Response selection	Premotor processes [Warning cue ←→ imperative stimulus] “priming the movement representations of the prepared response in foreperiod”	Motor processes
					Response generation
	Timing	Stimulus processing load			Coordinate biomechanic movement properties: effector/degrees of freedom	Processing demand
1FT	Intrinsic	No	No	No	1/2	Simple
2FT	Intrinsic	No	No/yes	No	2/2	Complex
SRT	Extrinsic	Low	No	No	1/1	Simple
CRT	Extrinsic	Higher	Yes	Yes	1/2	Complex