Results 271 to 280 of about 17,689,950 (324)
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Neuroscience Letters, 2019
The activity of hippocampal cell assemblies is considered to function as the neural substrate for a cognitive map in various animal species. The firing rate of hippocampal place cells increases when an individual animal reaches a specific location in an ...
Yutaro Hazama, R. Tamura
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The activity of hippocampal cell assemblies is considered to function as the neural substrate for a cognitive map in various animal species. The firing rate of hippocampal place cells increases when an individual animal reaches a specific location in an ...
Yutaro Hazama, R. Tamura
semanticscholar +1 more source
Place-cell coding in flying birds
Learning & Behavior, 2023A research article recently published in PNAS by Agarwal and colleagues (Proceedings of the National Academy of Sciences, 120(5), Article e2212418120, 2023) identified place cells in the brain of flying birds, specifically in the anterior hippocampus and in a neighbouring region, the posterior hyperpallium apicale, with fewer detected in a more distant
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Trajectory estimation from place cell data
Neural Networks, 2001We consider the problem of propagating the conditional probability density associated with the movement parameters (position, heading, velocity, etc.) of an animal, given the responses of an ensemble of place cells. While we are not the first to look at this question, ours seems to be the first treatment that incorporates a general Markov process model
N, Twum-Danso, R, Brockett
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Making the case for place cells
Nature Reviews Neuroscience, 2020Optogenetic stimulation of place cells alters memory-guided spatial navigation in mice, providing evidence for a causal role for these cells in spatial cognition.
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Place Cells and Place Recognition Maintained by Direct Entorhinal-Hippocampal Circuitry
Science, 2002Place cells in hippocampal area CA1 may receive positional information from the intrahippocampal associative network in area CA3 or directly from the entorhinal cortex. To determine whether direct entorhinal connections support spatial firing and spatial memory, we removed all input from areas CA3 to CA1, thus isolating the CA1 area. Pyramidal cells in
Vegard H, Brun +6 more
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From grid cells to place cells: A mathematical model
Hippocampus, 2006AbstractAnatomical connectivity and recent neurophysiological results imply that grid cells in the medial entorhinal cortex are the principal cortical inputs to place cells in the hippocampus. The authors propose a model in which place fields of hippocampal pyramidal cells are formed by linear summation of appropriately weighted inputs from entorhinal ...
Trygve, Solstad +2 more
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Science, 2021
Imaging Despite considerable progress in recent years, pathological analysis of tissues and organs often still relies on old-fashioned microscopic techniques. Similarly, genomic and transcriptomic analysis is commonly applied to bulk tissue samples. To address the limitations of these approaches, Zhao et al. and van Ineveld et al.
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Imaging Despite considerable progress in recent years, pathological analysis of tissues and organs often still relies on old-fashioned microscopic techniques. Similarly, genomic and transcriptomic analysis is commonly applied to bulk tissue samples. To address the limitations of these approaches, Zhao et al. and van Ineveld et al.
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Noradrenergic regulation of hippocampal place cells
Hippocampus, 2001AbstractThe influence of noradrenergic input to the hippocampus was assessed by recording hippocampal place cells and by modulating the noradrenergic tone with a selective agonist and antagonist of the α2‐autoreceptors. The rats received intraperitoneal injection of 5 μg/kg of dexmedetomidine (DEX), an α2‐agonist, 0.2 mg/kg of atipamezole (ATI), an α2 ...
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Science Signaling, 2015
Adiponectin stimulates B cells to release a peptide that restricts the transendothelial migration of T cells.
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Adiponectin stimulates B cells to release a peptide that restricts the transendothelial migration of T cells.
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Science, 2003
STKE Vascular proliferative diseases, such as atherosclerosis and coronary restenosis, are characterized by dedifferentiation, abnormal proliferation, and migration of vascular smooth muscle cells, a pathophysiological reaction to injury that has been interpreted as a response to cytokines released by inflammatory cells.
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STKE Vascular proliferative diseases, such as atherosclerosis and coronary restenosis, are characterized by dedifferentiation, abnormal proliferation, and migration of vascular smooth muscle cells, a pathophysiological reaction to injury that has been interpreted as a response to cytokines released by inflammatory cells.
openaire +1 more source