Vertebrate hippocampal formation is central to conversations on the comparative analysis of
spatial cognition, especially in light of variation found in different vertebrate classes …

To determine whether entorhinal spatial representations are continuous or fragmented, we
recorded neural activity in grid cells while rats ran through a stack of interconnected, zig …

Cells in the mammalian hippocampal formation subserve neuronal representations of
environmental location and support navigation in familiar environments. Grid cells constitute …

Grid cells are neurons active in multiple fields arranged in a hexagonal lattice and are
thought to represent the “universal metric for space.” However, they become …

Rats trained to relocate a particular corner in a rectangular arena systematically confound
the correct corner and the diametrically opposite one—this rotational error demonstrates the …

The ability of animals to find important goals in their environment has been said to require a
form of learning that is qualitatively different from that normally studied in the conditioning …

The capacity to reorient in one's environment is a fundamental part of the spatial cognitive
systems of both humans and nonhuman species. Abundant literature has shown that human …

This first test of the role of REM (rapid eye movement) sleep in reversal spatial learning is
also the first attempt to replicate a much cited pair of papers reporting that REM sleep …

The present study examined the consequences of retrosplenial cortex lesions in rats on two
novel spatial tasks. In the first experiment, rats discriminated opposing room views from the …

We review growing evidence that the reorientation system—shared by both humans and
nonhuman species—privileges geometric representations of space and exhibits many of the …