CA3 lesions impair encoding, Whilst CA1 lesions impair retrieval throughout Finding out of the Hebb-Williams maze. CA3 efferents during the fimbria ended up transected, using care to spare cholinergic and GABAergic afferents. CA1 efferents during the dorsal fornix have been similarly transected. Fimbria transections, but not dorsal fornix transecti