Gated transformations from egocentric to allocentric reference frames involving retrosplenial cortex, entorhinal cortex, and hippocampus

AS Alexander, JC Robinson, CE Stern… - …, 2023 - Wiley Online Library
This paper reviews the recent experimental finding that neurons in behaving rodents show
egocentric coding of the environment in a number of structures associated with the …

The hippocampus associated GABAergic neural network impairment in early-stage of Alzheimer's disease

Y Tang, Y Yan, J Mao, J Ni, H Qing - Ageing Research Reviews, 2023 - Elsevier
Alzheimer's disease (AD) is the commonest neurodegenerative disease with slow
progression. Pieces of evidence suggest that the GABAergic system is impaired in the early …

Precisely timed theta oscillations are selectively required during the encoding phase of memory

CR Quirk, I Zutshi, S Srikanth, ML Fu… - Nature …, 2021 - nature.com
Brain oscillations have been hypothesized to support cognitive function by coordinating
spike timing within and across brain regions, yet it is often not known when timing is either …

Spatial memory requires hypocretins to elevate medial entorhinal gamma oscillations

Y Liao, R Wen, S Fu, X Cheng, S Ren, M Lu, L Qian… - Neuron, 2024 - cell.com
The hypocretin (Hcrt)(also known as orexin) neuropeptidic wakefulness-promoting system is
implicated in the regulation of spatial memory, but its specific role and mechanisms remain …

Optogenetic frequency scrambling of hippocampal theta oscillations dissociates working memory retrieval from hippocampal spatiotemporal codes

G Etter, S van der Veldt, J Choi, S Williams - Nature communications, 2023 - nature.com
The precise temporal coordination of activity in the brain is thought to be fundamental for
memory function. Inhibitory neurons in the medial septum provide a prominent source of …

Neuromodulator-dependent synaptic tagging and capture retroactively controls neural coding in spiking neural networks

AB Lehr, J Luboeinski, C Tetzlaff - Scientific Reports, 2022 - nature.com
Events that are important to an individual's life trigger neuromodulator release in brain areas
responsible for cognitive and behavioral function. While it is well known that the presence of …

Septo-hippocampal dynamics and the encoding of space and time

JC Robinson, JH Wilmot, ME Hasselmo - Trends in Neurosciences, 2023 - cell.com
Encoding an event in memory requires neural activity to represent multiple dimensions of
behavioral experience in space and time. Recent experiments have explored the influence …

Angular and linear speed cells in the parahippocampal circuits

D Spalla, A Treves, CN Boccara - Nature communications, 2022 - nature.com
An essential role of the hippocampal region is to integrate information to compute and
update representations. How this transpires is highly debated. Many theories hinge on the …

Ketamine evoked disruption of entorhinal and hippocampal spatial maps

FK Masuda, EA Aery Jones, Y Sun… - Nature …, 2023 - nature.com
Ketamine, a rapid-acting anesthetic and acute antidepressant, carries undesirable spatial
cognition side effects including out-of-body experiences and spatial memory impairments …

Coherently remapping toroidal cells but not grid cells are responsible for path integration in virtual agents

V Schøyen, MB Pettersen, K Holzhausen, M Fyhn… - Iscience, 2023 - cell.com
It is widely believed that grid cells provide cues for path integration, with place cells
encoding an animal's location and environmental identity. When entering a new …