Table 1.

Summary of task measures

Task Measures	Equation	Symbol	Relation to Eq. 3	n	Group Mean
Experiment 1
Success	4	N/A	N/A	39	69%
Weight of vision	5	wV	≈WV	39	0.59
P endpoint shift	7	ΔŷP	≈ΔŶP + motor adaptation	39	27.5 mm
Sensory subexperiment	N/A	ΔŷP	≈ΔŶP	11*	18.6 mm*
Experiment 2
Weight of vision	5	wV	≈WV	19	0.53
P endpoint shift	8	ΔŷP	≈ΔŶP	19	17.4 mm

Δŷ_P represents the observed change in behavior when subjects indicated the position of proprioceptive (P) targets; w_V represents the measured weight of vision relative to proprioception. All task measures are related to elements of Eq. 3. N/A, not applicable.

^*Data given only for 11 of 18 subjects whose change in P reach endpoints was significant.