Figure 7. The relationship between phase lag and gain for the three types of γ_s action.

Individual points show values of phase lag and gain obtained by sinusoidally modulating 50 Hz stimulation of γ_s axons at 1 Hz by ± 30 Hz. ○, pure bag₂ effects; •, pure chain effects; +, mixed bag₂ and chain effects. The linear regression (dashed line) is drawn for the mixed data (+) only.