Experimental Neurobiology

Table 1Averages and standard deviations of the features for various behaviors including scratching (unit: no. of pixels)

Behavior	Frame-to-frame pixel difference	Frame-to-frame body position difference	Frame-to-frame body size difference	Body size
scratching	173.3±204.6	1.92±1.68	496.6±530.9	18724.2±2168.1
grooming	54.0±120.7^**	1.47±2.56^**	315.8±628.5^**	16561.9±2401.0^**
digging	26.3±90.5^**	1.42±2.77^**	335.5±591.5^**	18321.3±2145.1
rearing	108.6±214.6^**	2.69±6.84^**	531.5±1335.0^*	18660.0±3150.2^**
walking	597.8±591.1^**	7.42±11.79^**	900.9±1877.7^**	21386.0±3110.3^**

p-value<0.0001^**, p-value<0.01^* in one-way ANOVA for comparing scratching with each behavior on each feature, Data are mean±SD.