Results 51 to 60 of about 17,689,950 (324)

Hippocampal Global Remapping Can Occur without Input from the Medial Entorhinal Cortex. [PDF]

open access: yes, 2018
The high storage capacity of the episodic memory system relies on distinct representations for events that are separated in time and space. The spatial component of these computations includes the formation of independent maps by hippocampal place cells ...
Boublil, Brittney L   +4 more
core   +2 more sources

Place Cells, Grid Cells, Attractors, and Remapping [PDF]

open access: yesNeural Plasticity, 2011
Place and grid cells are thought to use a mixture of external sensory information and internal attractor dynamics to organize their activity. Attractor dynamics may explain both why neurons react coherently following sufficiently large changes to the environment (discrete attractors) and how firing patterns move smoothly from one representation to the ...
openaire   +4 more sources

Ecology of endolithic lichens colonizing granite in continental Antarctica [PDF]

open access: yes, 2005
In this study, the symbiont cells of several endolithic lichens colonizing granite in continental Antarctica and the relationships they have with the abiotic environment were analyzed in situ, in order to characterize the microecosystems integrating ...
Ascaso, Carmen   +4 more
core   +2 more sources

Neural Representation of Overlapping Path Segments and Reward Acquisitions in the Monkey Hippocampus

open access: yesFrontiers in Systems Neuroscience, 2019
Disambiguation of overlapping events is thought to be the hallmark of episodic memory. Recent rodent studies have reported that when navigating overlapping path segments in the different routes place cell activity in the same overlapping path segments ...
Rafael Vieira Bretas   +7 more
doaj   +1 more source

LPMP: A Bio-Inspired Model for Visual Localization in Challenging Environments

open access: yesFrontiers in Robotics and AI, 2022
Autonomous vehicles require precise and reliable self-localization to cope with dynamic environments. The field of visual place recognition (VPR) aims to solve this challenge by relying on the visual modality to recognize a place despite changes in the ...
Sylvain Colomer   +5 more
doaj   +1 more source

Distribution of Interstitial Cells and Differentiating Nematocytes in Nests in Hydra attenuata [PDF]

open access: yes, 1974
We have used tissue maceration to quantitate interstitial cell nests in Hydra attenuata and thiolacetic acid-lead nitrate staining to quantitate differentiating nematocytes. Most I-cell nests have 2, 4, 8, or 16 cells.
Challoner, Diane, David, Charles N.
core   +1 more source

Human plasmacytoid dendritic cells and cutaneous melanoma [PDF]

open access: yes, 2020
The prognosis of metastatic melanoma (MM) patients has remained poor for a long time. However, the recent introduction of effective target therapies (BRAF and MEK inhibitors for BRAFV600-mutated MM) and immunotherapies (anti-CTLA-4 and anti-PD-1) has ...
Bugatti, Mattia   +4 more
core   +2 more sources

Insensitivity of Place Cells to the Value of Spatial Goals in a Two-Choice Flexible Navigation Task

open access: yesJournal of Neuroscience, 2019
Hippocampal place cells show position-specific activity thought to reflect a self-localization signal. Several reports also point to some form of goal encoding by place cells.
Éléonore Duvelle   +6 more
semanticscholar   +1 more source

CoBeL-RL: A neuroscience-oriented simulation framework for complex behavior and learning

open access: yesFrontiers in Neuroinformatics, 2023
Reinforcement learning (RL) has become a popular paradigm for modeling animal behavior, analyzing neuronal representations, and studying their emergence during learning. This development has been fueled by advances in understanding the role of RL in both
Nicolas Diekmann   +7 more
doaj   +1 more source

The stimulus control of local enclosures and barriers over head direction and place cell spatial firing

open access: yesBrain and Behavior, 2021
Objective Head direction cell and place cell spatially tuned firing is often anchored to salient visual landmarks on the periphery of a recording environment.
Anna E. Smith   +2 more
doaj   +1 more source

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