Hippocampus replay
WebbHippocampal replay is thought to be essential for the consolidation of event memories in hippocampal-neocortical networks. Replay is present during both sleep and waking … WebbAbstract: In the hippocampus, replay sequences are temporally compressed patterns of neural spiking that resemble patterns that occur when the animal is moving through the …
Hippocampus replay
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WebbAbstract. Hippocampal place cells take part in sequenced patterns of reactivation after behavioral experience, known as replay. Since replay was first reported, nearly 20 years ago, many new results have been found, necessitating revision of the original interpretations. We review some of these results with a focus on the phenomenology of … Webb1 sep. 2024 · Hippocampus replay has been examined in simple runway tasks [8,9,10,11]. Studies have shown that place cells are activated not only during active navigation but also during passive states including sleep [8,11], and when awake but not moving , place cells are also activated.
Webb11 mars 2010 · Hippocampal place cells are active when the rat is at certain locations. The sequence of these active place cells is known to be rapidly replayed during sharp-wave-ripple events in the EEG. In this issue of Neuron, a study by Gupta et al. challenges previous notions that the replayed trajectories are solely a passive echo of past episodes. Webb15 juli 2024 · Our first hypothesis is that reward-modulated replay in hippocampus implements a simple and efficient form of reinforcement learning [ 18 ], which allows recurrent dynamics in prefrontal cortex (PFC) to consolidate snippet representations into novel efficient sequences, by rejecting sequences that are less robustly coded in the input.
Webb18 feb. 2016 · imental data recorded in the hippocampus of a rat performing a spatial memory task. We apply the discrete decision state filter to classify the replay content into four categories based on the direction and temporal order of the replay trajectory and compute our confidence about the classification. We show that Webb26 jan. 2011 · Replay is marked by the ordered reactivation of hippocampal neurons reflecting previous behavioral experiences. Two methods have been used to detect …
Webb10 jan. 2024 · Figure 4. Within-field location versus ripple band firing phase during replay events in REST and within-field location versus theta phase during movement in RUN. (A) Distribution of within-field location versus ripple band phase slopes (overall median ± SD = −0.505 ± 4.80 rad/field), which differs from zero (t (553) = −2.36; p = 0.0184).
Webb24 feb. 2024 · Hippocampus replay phenomenon observed during SWR complexes in active rest phase is modeled by a training set made of condensed subsequences of place cell activation patterns replayed at random. Sequences are represented with a resolution of 20 samples/m. Each update cycle of the reservoir is considered to correspond to 5 ms … scrolling news ticker for websiteWebb12 feb. 2006 · Nature - During sleep, neurons in the rat hippocampus are known to replay sequences of activity that took place when the rat was awake. A new study, in rats … pcd album coverWebb20 dec. 2024 · One of the most striking features of the hippocampal network is its ability to self-generate neuronal sequences representing temporally compressed, spatially coherent paths. These brief events, often termed “replay” in the scientific literature, are largely confined to non-exploratory states such as sleep or quiet rest. scrolling newsletter templateWebb29 mars 1996 · Abstract. The correlated activity of rat hippocampal pyramidal cells during sleep reflects the activity of those cells during earlier spatial exploration. Now the … pcda ofstedWebb21 okt. 2024 · This iterative process, of predicting and evaluating future actions in an environment has multiple corollaries in hippocampal processing: predictive place cell coding (the “successor … scrolling not working windows 11Webb29 mars 1996 · The correlated activity of rat hippocampal pyramidal cells during sleep reflects the activity of those cells during earlier spatial exploration. Now the patterns of activity during sleep have also been found to reflect the order in which the cells fired during spatial exploration. pcd armyWebb7 apr. 2024 · Using nonlocal ‘replay’ of spatial locations in hippocampus as a window into memory access, we simulate a spatial navigation task in which an agent accesses memories of locations sequentially ... pcd and cecl