No genotype difference: p<0.05 with neurons as n 57.2%; with mice as n 4.2%; neurons selected as responsive on odd trials: mean ΔF/F on the same trials 0.150, on held-out trials 0.119; all neurons 0.050 KO response lower by 0.04 (0.05 vs 0.01): p<0.05 with neurons as n 84.7%; with mice as n 25.1%; neurons selected as responsive on odd trials: mean ΔF/F on the same trials 0.146, on held-out trials 0.112; all neurons 0.030