Fig. 2.

Head direction selectivity is spared. A. Examples of four conjunctive grid-by-head-direction cells. The selectivity for head direction observed before infusion (Baseline) remains during MS inactivation despite the loss of grid cell spatial periodicity in the spatial maps. B. Four head direction selective cells without spatial periodicity before infusion (Baseline) maintain head direction preference during MS inactivation. Note that overall firing rates are not reduced in either cell type.