Values are given as means (SEMs) for 100 trials in the 0–15 and 15–30 ms post-whisker-stimulus epoch for each stimulus condition and rearing group. The means shown are estimated population marginal means adjusted for all fixed effects (i.e., main effects and interactions) in the model (Searle et al. 1980). The means displayed are in the scale of raw counts and are thus exponentiated versions of the estimates directly yielded by the generalized mixed-model analysis. SEMs were estimated using the delta method (Littell et al. 2006).