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Visual Landmark Information Gains Control Of The Head Direction Signal At The Lateral Mammillary Nuclei, R.M. Yoder, J.R. Peck, J.S. Taube

Psychology

The neural representation of directional heading is conveyed by head direction (HD) cells located in an ascending circuit that includes projections from the lateral mammillary nuclei (LMN) to the anterodorsal thalamus (ADN) to the postsubiculum (PoS). The PoS provides return projections to LMN and ADN and is responsible for the landmark control of HD cells in ADN. However, the functional role of the PoS projection to LMN has not been tested. The present study recorded HD cells from LMN after bilateral PoS lesions to determine whether the PoS provides landmark control toLMNHDcells. After the lesion and implantation of electrodes,HDcell activity …