Results 241 to 250 of about 7,186,907 (267)
Some of the next articles are maybe not open access.
Avian navigation: Head direction cells in the quail hippocampus
Current Biology, 2021Birds are experts in many behaviors akin to those in mammals that are known to involve the hippocampus, yet the avian hippocampus is still poorly understood. A new study finds head-direction cells, but not place cells, in the hippocampal formation of quails.
Aylin, Apostel, Jonas, Rose
openaire +2 more sources
Self-motion improves head direction cell tuning
Journal of Neurophysiology, 2014 Head direction (HD) cells respond when an animal faces a particular direction in the environment and form the basis for the animal's perceived directional heading. When an animal moves through its environment, accurate updating of the HD signal is required to reflect the current heading, but the cells still maintain a representation of HD even when the
Jeffrey S. Taube, Michael Shinder
exaly +4 more sources
Heading‐vector navigation based on head‐direction cells and path integration
Hippocampus, 2008AbstractInsect navigation is guided by heading vectors that are computed by path integration. Mammalian navigation models, on the other hand, are typically based on map‐like place representations provided by hippocampal place cells. Such models compute optimal routes as a continuous series of locations that connect the current location to a goal.
John L, Kubie, André A, Fenton
openaire +2 more sources
Cue control and head direction cells.
Behavioral Neuroscience, 1998Previous research has shown that head direction (HD) cells in both the anterior dorsal thalamus (ADN) and the postsubiculum (PoS) in rats discharge in relation to familiar, visual landmarks in the environment. This study assessed whether PoS and ADN HD cells would be similarly responsive to nonvisual or unfamiliar environmental cues. After visual input
J P, Goodridge +4 more
openaire +2 more sources
Neurocomputing, 1999
Abstract We present a model of the rat head direction cell circuit that accounts for the recently discovered bimodality and distortion observed in the tuning curves of anterior thalamic head direction cells. This model also explains why anterior thalamic head direction cells show a constant amount of anticipation across all angular velocities.
Aaron David Redish +2 more
exaly +2 more sources
Abstract We present a model of the rat head direction cell circuit that accounts for the recently discovered bimodality and distortion observed in the tuning curves of anterior thalamic head direction cells. This model also explains why anterior thalamic head direction cells show a constant amount of anticipation across all angular velocities.
Aaron David Redish +2 more
exaly +2 more sources
Calibration of the head direction network: a role for symmetric angular head velocity cells
Journal of Computational Neuroscience, 2010Continuous attractor networks require calibration. Computational models of the head direction (HD) system of the rat usually assume that the connections that maintain HD neuron activity are pre-wired and static. Ongoing activity in these models relies on precise continuous attractor dynamics.
Peter Stratton +2 more
openaire +5 more sources
A self-organizing VQ model of head-direction cells and grid cells
Artificial Life and Robotics, 2008In this article, we propose a three-layered self-organizing model to extract the head direction and position of a moving object separately. The model consists of three layers, each of which is a self-organizing vector quantization (VQ) model. The second layer receives inhibitory input from the first, and the third layer receives inhibitory input from ...
Naoki Oshiro +2 more
openaire +2 more sources
The Discovery of Head Direction Cells: A Personal Account
HippocampusABSTRACTThis article is my recollection of events surrounding the discovery of head direction (HD) cells by Jim Ranck in 1984 and the first journal publications 6 years later. Ranck first described the fundamental properties of HD cells qualitatively in a Society for Neuroscience abstract (1984) and in the proceedings to a conference.
openaire +2 more sources
Sensory and behavioral modulation of thalamic head-direction cells
Nature NeuroscienceHead-direction (HD) neurons are thought to exclusively encode directional heading. In awake mice, we found that sensory stimuli evoked robust short-latency responses in thalamic HD cells, but not in non-HD neurons. The activity of HD cells, but not that of non-HD neurons, was tightly correlated to brain-state fluctuations and dynamically modulated ...
Eduardo Blanco-Hernández +3 more
openaire +2 more sources
Head Direction Cells: From Generation to Integration
2014To maintain spatial orientation and guide navigation, an animal must have knowledge of its location and displacement of distance and direction from that location. Cells within the hippocampal formation and connected structures are spatially correlated to location and direction.
Shawn S. Winter, Jeffrey S. Taube
openaire +1 more source