CAMK2B and tetanus: This paired stimulation suppressed iLTP at the MLI-PC synapses in both wt groups to levels not significantly different from Camk2a-/- and Camk2b-/- (103.6 ± 5.2%, p = 0.22 and 102.5 ± 3.7%, p = 0.52, respectively; Figures 3A,B), without changing the paired pulse ratio (paired Student’s t-test of averages pre- vs. post-tetanus: all p-values > 0.7).