highly significantp < 10 -5
3-way ANOVA for mechanical thresholds as a function of animal grouping, day of test, and paw tested was highly significant for all 3 factors (for animal grouping F 2,199 = 370.; for test day F 3,199 = 157.; and for paw tested F 3,199 = 1407.; p < 10 -5 for all 3 factors), for their pair-wise interactions (p < 10 -5 ) and for their 3 way interaction (p < 10 -5 ).