[HTML][HTML] Hippocampal “time cells” bridge the gap in memory for discontiguous events

CJ MacDonald, KQ Lepage, UT Eden, H Eichenbaum - Neuron, 2011 - cell.com
The hippocampus is critical to remembering the flow of events in distinct experiences and, in
doing so, bridges temporal gaps between discontiguous events. Here, we report a robust …

Grid cells generate an analog error-correcting code for singularly precise neural computation

S Sreenivasan, I Fiete - Nature neuroscience, 2011 - nature.com
Entorhinal grid cells in mammals fire as a function of animal location, with spatially periodic
response patterns. This nonlocal periodic representation of location, a local variable, is …

Behavioral correlates of human hippocampal delta and theta oscillations during navigation

AJ Watrous, I Fried, AD Ekstrom - Journal of …, 2011 - journals.physiology.org
Previous rodent studies demonstrate movement-related increases in theta oscillations, and
recent evidence suggests that multiple navigationally relevant variables are reflected in this …

Regression-based identification of behavior-encoding neurons during large-scale optical imaging of neural activity at cellular resolution

A Miri, K Daie, RD Burdine, E Aksay… - Journal of …, 2011 - journals.physiology.org
The advent of methods for optical imaging of large-scale neural activity at cellular resolution
in behaving animals presents the problem of identifying behavior-encoding cells within the …

[HTML][HTML] Speed controls the amplitude and timing of the hippocampal gamma rhythm

Z Chen, E Resnik, JM McFarland, B Sakmann… - PloS one, 2011 - journals.plos.org
Cortical and hippocampal gamma oscillations have been implicated in many behavioral
tasks. The hippocampus is required for spatial navigation where animals run at varying …

The influence of objects on place field expression and size in distal hippocampal CA1

SN Burke, AP Maurer, S Nematollahi, AR Uprety… - …, 2011 - Wiley Online Library
The perirhinal and lateral entorhinal cortices send prominent projections to the portion of the
hippocampal CA1 subfield closest to the subiculum, but relatively little is known regarding …

[HTML][HTML] Grid cells, place cells, and geodesic generalization for spatial reinforcement learning

NJ Gustafson, ND Daw - PLoS computational biology, 2011 - journals.plos.org
Reinforcement learning (RL) provides an influential characterization of the brain's
mechanisms for learning to make advantageous choices. An important problem, though, is …

Memory-guided learning: CA1 and CA3 neuronal ensembles differentially encode the commonalities and differences between situations

AS Bahar, PR Shirvalkar, ML Shapiro - Journal of Neuroscience, 2011 - Soc Neuroscience
Memory influences learning, but how neural signals support such transfer are unknown. To
investigate these mechanisms, we trained rats to perform a standard spatial memory task in …

Dynamics of hippocampal spatial representation in echolocating bats

N Ulanovsky, CF Moss - Hippocampus, 2011 - Wiley Online Library
The “place fields” of hippocampal pyramidal neurons are not static. For example, upon a
contextual change in the environment, place fields may “remap” within typical timescales …

Changes in reward contingency modulate the trial-to-trial variability of hippocampal place cells

AM Wikenheiser, AD Redish - Journal of neurophysiology, 2011 - journals.physiology.org
Pyramidal cells in the rodent hippocampus often exhibit clear spatial tuning. Theories of
hippocampal function suggest that these “place cells” implement multiple, independent …