Results 11 to 20 of about 9,473,872 (308)

Neuromorphic Place Cells

CoRR, 2023
A neuromorphic SLAM system shows potential for more efficient implementation than its traditional counterpart. We demonstrate a mixed-mode implementation for spatial encoding neurons including theta cells, vector cells, and place cells. Together, they form a biologically plausible network that could reproduce the localization functionality of place ...
Zhaoqi Chen, Ralph Etienne-Cummings
openaire   +3 more sources

Place cells and place navigation [PDF]

Proceedings of the National Academy of Sciences, 1997
The assumption that hippocampal place cells (PCs) form the neural substrate of cognitive maps can be experimentally tested by comparing the effect of experimental interventions on PC activity and place navigation. Conditions that interfere with place navigation (darkness, cholinergic blockade) but leave PC activity unaffected ...
J, Bures, A A, Fenton, Y, Kaminsky, L, Zinyuk   +3 more
openaire   +2 more sources

Place Cells, Grid Cells, and Memory [PDF]

Cold Spring Harbor Perspectives in Biology, 2015
The hippocampal system is critical for storage and retrieval of declarative memories, including memories for locations and events that take place at those locations. Spatial memories place high demands on capacity. Memories must be distinct to be recalled without interference and encoding must be fast.
Moser, May-Britt, Rowland, David Clayton, Moser, Edvard Ingjald   +2 more
openaire   +3 more sources

A Developmental Switch in Place Cell Accuracy Coincides with Grid Cell Maturation [PDF]

, 2015
Place cell firing relies on information about self-motion and the external environment, which may be conveyed by grid and border cells, respectively.
Muessig, L, Hauser, J, Wills, TJ, Cacucci, F   +3 more
core   +2 more sources

Heterogeneous modulation of place cell firing by changes in context [PDF]

, 2003
Hippocampal place cells show spatially localized activity that can be modulated by both geometric information ( e. g., the distances and directions of features in the environment) and nongeometric information (e.g., colors, odors, and possibly behaviors).
Anderson, MI, Michael I. Anderson, Anderson, Michael I., Jeffery, KJ, Kathryn J. Jeffery, Jeffery, Kathryn J.   +5 more
core   +1 more source

Optimal Population Codes for Space: Grid Cells Outperform Place Cells [PDF]

, 2012
Rodents use two distinct neuronal coordinate systems to estimate their position: place fields in the hippocampus and grid fields in the entorhinal cortex.
Stemmler, Martin B., Stemmler, Martin, Herz, Andreas V. M., Mathis, Alexander   +3 more
core   +1 more source

Lesions of the head direction cell system increase hippocampal place field repetition [PDF]

, 2017
A central tenet of systems neuroscience is that the mammalian hippocampus provides a cognitive map of the environment. This view is supported by the finding of place cells, neurons whose firing is tuned to specific locations in an animal’s ...
Grieves, RM, Rachael Stentiford, Dudchenko, Paul, Bett, D, Stentiford, Rachael, Dudchenko, Paul A, Dudchenko, Paul A., Wood, Emma R, Emma R. Wood, Bett, David, Grieves, Roddy M., Wood, Emma R., Harland, B, Wood, ER, Grieves, Roddy M, Dudchenko, PA, Harland, Bruce, Grieves, Roderick, Stentiford, R, Paul A. Dudchenko, Bruce Harland, Roddy M. Grieves, David Bett   +22 more
core   +1 more source

Extracting grid cell characteristics from place cell inputs using non-negative principal component analysis

eLife, 2016
Many recent models study the downstream projection from grid cells to place cells, while recent data have pointed out the importance of the feedback projection. We thus asked how grid cells are affected by the nature of the input from the place cells. We
Yedidyah Dordek, Daniel Soudry, Ron Meir, Dori Derdikman   +3 more
doaj   +1 more source

Structural basis of meiotic telomere attachment to the nuclear envelope by MAJIN-TERB2-TERB1

Nature Communications, 2018
The meiotic telomere complex (MAJIN, TERB1, TERB2) tethers telomere ends to the nuclear envelope. Here the authors present the crystal structure of human MAJIN-TERB2 and combine biophysical approaches and structured illumination microscopy analysis of ...
James M. Dunce, Amy E. Milburn, Manickam Gurusaran, Irene da Cruz, Lee T. Sen, Ricardo Benavente, Owen R. Davies   +6 more
doaj   +1 more source

Hierarchical organization of context in the hippocampal episodic code

eLife, 2013
The hippocampal system appears to be critically important in establishing episodic memory of both internal and external events within contexts as well as spatial memory, which enables flexible spatial navigation.
Susumu Takahashi
doaj   +1 more source