Figure 3.

Speed of locomotion. A, The speed of all animals (n = 53) averaged at each time point from the beginning of the assay is indicated by the black line. Representative error bars indicate SD. The gray line indicates a fitted curve of the form speed = (S/β)^*exp(-t/β) + C, where t = time,β = 53, S = 5500, and the minimum speed C = 82. B, The speed as a function of time before initiation of a reversal. Error bars indicate SEM. C, The black line indicates the distribution of turning rate in degrees per second for all time points during which animals were moving forward. The gray line is the fitted normal curve. Mean = 0; SD = 16; n = 8789.