Place cells are a fundamental component of the rodent navigational system. One intriguing implication of place cells is that humans, by extension, have "map-like" (or GPS-like) knowledge that we use to represent space. Here, we review both behavioral and neural studies of human navigation, suggesting that how we process visual information forms a critical component of how we represent space. Th...

Attractor neural network theory has been proposed as a theory for long-term memory. Recent studies of hippocampal place cells, including a study by Leutgeb et al. in this issue of Neuron, address the potential role of attractor dynamics in the formation of hippocampal representations of spatial maps.

The identification of 'place cells' in the hippocampus has suggested a special role for this brain structure in spatial mapping, but other studies have indicated a more general role in memory. New findings on place cells point the way towards a reconciliation of the mapping and memory views.

This paper shows how to stably merge two sequences A and B of sizes m and n, m n, respectively, with O…m ‡ n† assignments, O…m log…n=m ‡ 1†† comparisons and using only a constant amount of additional space. This result matches all known lower bounds and closes an open problem posed by Dudzinski and Dydek in 1981. Our algorithm is based on the unstable algorithm of Mannila and Ukkonen. All techn...

The paper presents a study of various environmental factors which influence respira tion, glycolysis, and the Crabtree Effect in the Ehrlich ascites carcinoma cells. The factors examined for influence on respiration include: (1) pH in the presence and ab sence of glucose and (2) varying concentrations of inorganic phosphate in: (a) media used to wash the cells, (6) incubation media, with no sup...

having completed a degree in law at the Un ivers ity of Toronto on a leave of ab sence. T he author would like to than k Professor C olleen F lood at th e Faculty of Law Un ivers ity of Toronto , for her comments on an earlier draft of this paper. All remaining errors and omissions are the author’s alone. S.C. 19 84, c.6 [he reinafter CHA]. Federal-Provincial-Territorial Advisory Comm ittee on ...

sence of exogenously added glutamate and pyridoxal-5'-phosphate and produced radioactive aspartate in the presence of these components. Reduced nicotinamide adenine dinucleotide or reduced nicotinamide adenine dinucleotide phosphate could not be substituted for adenosine triphosphate (ATP); phosphoenolpyruvate even in the presence of nucleoside diphosphates could not replace pyruvate plus ATP; ...

The hippocampus has long been associated with navigation and spatial representations, but it has been difficult to link directly the neurophysiological correlates of hippocampal place cells with navigational planning and action. In recent years, large-scale population recordings of place cells have revealed that spatial sequences are stored and activated in ways that may support navigational st...