Figure 5. Population characteristics of hindlimb PTN responses in tests revealing influences from shoulder and hip girdles.

A, mean value of modulation. B–D, algebraic differences between preferred phases of individual PTNs in tests 2H and 2F2H (B), tests 2F and 2F2H (C), and in tests 2F2H/Anti and 2F2H (D). E, mean value of modulation in group 1 (phase shift in D is less than 0.2) and group 2 neurons (phase shift in D is more than 0.2).