How does the brain encode abstract state-space representations in high-dimensional environments?

Cross L, Cockburn J, Yue Y, O’Doherty JP. Using deep reinforcement learning to reveal how the brain encodes abstract state-space representations in high-dimensional environments. Neuron. 2020 Dec 7:S0896-6273(20)30899-0. doi: 10.1016/j.neuron.2020.11.021.

In Brief
Cross et al. scanned humans playing

Be the First to comment. Read More

How does the monkey brain represent what and when conjunctively during anassociative memory task?

Cruzado NA, Tiganj Z, Brincat SL, Miller EK, Howard MW. Conjunctive representation of what and when in monkey hippocampus and lateral prefrontal cortex during an associative memory task. Hippocampus. 2020 Dec;30(12):1332-1346. doi: 10.1002/hipo.23282.

Abstract
Adaptive memory requires the

Be the First to comment. Read More

How to build a fully automated bat flight environment for studying 3D navigation in flying bats?

Genzel D, Yartsev MM. The fully automated bat (FAB) flight room: A human-free environment for studying navigation in flying bats and its initial application to the retrosplenial cortex. Journal of Neuroscience Methods. 2020 Oct:108970. DOI: 10.1016/j.jneumeth.2020.108970.

“Background
Bats can

Be the First to comment. Read More

How do entorhinal grid cells represent volumetric (three-dimensional) space?

Roddy M. Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, Éléonore Duvelle, Kate J. Jeffery. Grid cell firing fields in a volumetric space. bioRxiv 2020.12.06.413542; doi: https://doi.org/10.1101/2020.12.06.413542

Abstract
“We investigated how entorhinal grid cells represent volumetric (three-dimensional) space

Be the First to comment. Read More

How do hippocampal place cells support spatial navigation and memory?

Nick T.M. Robinson, Lucie A.L. Descamps, Lloyd E. Russell, Moritz O. Buchholz, Brendan A. Bicknell, Georgy K. Antonov, Joanna Y.N. Lau, Rebecca Nutbrown, Christoph Schmidt-Hieber, Michael Häusser. Targeted Activation of Hippocampal Place Cells Drives Memory-Guided Spatial Behavior. Cell, 2020, …

Be the First to comment. Read More

How does the brain implement allocentric-egocentric coordinate transformation to guide navigation behavior?

Joeri BG van Wijngaarden, Susanne S Babl, Hiroshi T Ito. Entorhinal-retrosplenial circuits for allocentric-egocentric transformation of boundary coding. Elife. 2020 Nov 3;9:e59816. doi: 10.7554/eLife.59816. PMID: 33138915.

Abstract
Spatial navigation requires landmark coding from two perspectives, relying on viewpoint-invariant

Be the First to comment. Read More

Whether do the dorsal CA1 place cells of rats encode environmental connectivity?

Éléonore Duvelle, Roddy M Grieves, Anyi Liu, Selim Jedidi-Ayoub, Joanna Holeniewska, Adam Harris, Nils Nyberg, Francesco Donnarumma, Julie M. Lefort, Kate J. Jeffery, Christopher Summerfield, Giovanni Pezzulo, Hugo J. Spiers. Hippocampal place cells encode global location but not changes in

Be the First to comment. Read More

How do rats navigate in three-dimensional volumetric environments?

Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, Éléonore Duvelle & Roddy M. Grieves. Volumetric spatial behaviour in rats reveals the anisotropic organisation of navigation. Anim Cogn (2020). https://doi.org/10.1007/s10071-020-01432-w

Abstract
“We investigated how access to the vertical dimension influences …

Be the First to comment. Read More

How does brainstem locomotor circuit drive the activity of speed cells in the medial entorhinal cortex?

Carvalho, Miguel M., Nouk Tanke, Emilio Kropff, Menno P. Witter, May-Britt Moser, and Edvard I. Moser. “A Brainstem Locomotor Circuit Drives the Activity of Speed Cells in the Medial Entorhinal Cortex.” Cell Reports 32, no. 10 (2020): 108123.…

Be the First to comment. Read More

How does freely swimming fish represent space and locomotion in the brain to enable successful navigation?

Vinepinsky, E., Cohen, L., Perchik, S. et al. Representation of edges, head direction, and swimming kinematics in the brain of freely-navigating fish. Sci Rep 10, 14762 (2020). https://doi.org/10.1038/s41598-020-71217-1

Abstract
Like most animals, the survival of fish depends on

Be the First to comment. Read More

How are spatial landmarks encoded by cue cells in MEC for error correction during path integration?

Kinkhabwala, Amina A., Yi Gu, Dmitriy Aronov, and David W. Tank. “Visual cue-related activity of cells in the medial entorhinal cortex during navigation in virtual reality.” Elife 9 (2020): e43140.

Abstract
During spatial navigation, animals use self-motion

Be the First to comment. Read More

How does the brain correct cumulative error in the path-integration system plastically and adaptively?

Jayakumar, R.P., Madhav, M.S., Savelli, F. et al. Recalibration of path integration in hippocampal place cells. Nature 566, 533–537 (2019). https://doi.org/10.1038/s41586-019-0939-3

Abstract
Hippocampal place cells are spatially tuned neurons that serve as elements of a ‘cognitive map’ in

Be the First to comment. Read More

How does path integration operate at a neural level in humans?

Arnold, Aiden EG, Ford Burles, Signe Bray, Richard M. Levy, and Giuseppe Iaria. “Differential neural network configuration during human path integration.” Frontiers in human neuroscience 8 (2014): 263.

Abstract

Path integration is a fundamental skill for navigation

Be the First to comment. Read More

How does the bird brain encode head direction?

Elhanan Ben-Yishay, Ksenia Krivoruchko, Shaked Ron, Nachum Ulanovsky, Dori Derdikman, Yoram Gutfreund. Head-Direction Coding in the Hippocampal Formation of Birds. bioRxiv 2020.08.31.274928; doi: https://doi.org/10.1101/2020.08.31.274928

Abstract
Birds strongly rely on spatial memory and navigation. However, it is unknown

Be the First to comment. Read More

How does the brain navigate 2D semantic spaces?

Simone Viganò, Valerio Rubino, Antonio Di Soccio, Marco Buiatti, Manuela Piazza. Multiple spatial codes for navigating 2-D semantic spaces. bioRxiv 2020.07.16.205955; doi: https://doi.org/10.1101/2020.07.16.205955

Summary
When mammals navigate in the physical environment, specific neurons such as grid-cells, head-direction cells,

Be the First to comment. Read More