Modulation onset of SS activity of PCs for the three animals: Earliest onset of individual PCs.

Means, SDs and Ranges are in milliseconds. PC all: all PCs. PC inc: PCs showing increased SS activity as the earliest modulation regardless of movement direction. PC dec: PCs showing decreased SS activity as the earliest modulation. n: numbers of PCs in individual categories. Note: sum of PC inc and PC dec equals PC all. There was no significant difference between PC inc and PC dec in all three animals (p>0.21, 0.80, 0.60 in monkey M, S, W, Mann-Whitney U-test).Modulation onset of SS activity of PCs for the three animals: Earliest onset of individual PCs.