Figure 7.

Factors that influence the reduction in motor velocity. (A) Measured mean packaging rate (solid line) and measured mean motor velocity (rate not including pauses and slips, dotted line) versus filling compared with the velocity that would be expected if the force plotted in Fig. 6B were the only factor slowing the motor (dashed line). (B) Fold decrease from the initial value of the measured packaging rate (solid line), measured motor velocity (dotted line), and expected velocity due to force alone (dashed line). The inset shows a zoomed-in plot of the dashed line. All error bars indicate mean ± SE.