Category: 3D Spatial Representation

How the macaque hippocampal formation represents 3D space?

Mao, Dun, Eric Avila, Baptiste Caziot, Jean Laurens, J. David Dickman, and Dora E. Angelaki. “Spatial modulation of hippocampal activity in freely moving macaques.” Neuron (2021) https://doi.org/10.1016/j.neuron.2021.09.032 

Summary
The hippocampal formation is linked to spatial navigation, but

Be the First to comment. Read More

Whether humans represent a curved surface by building a dimension-reduced flattened 2D map or a full 3D map?

Misun Kim, Christian F. Doeller. Adaptive cognitive maps for curved surfaces in the 3D world.  

Abstract
“Terrains in a 3D world can be undulating. Yet, most prior research has exclusively investigated spatial representations on a …

Be the First to comment. Read More

How do 3D grid cells represent 3D space?

Gily Ginosar, Johnatan Aljadeff, Yoram Burak, Haim Sompolinsky, Liora Las & Nachum Ulanovsky. Locally ordered representation of 3D space in the entorhinal cortexNature (2021). https://doi.org/10.1038/s41586-021-03783-x

Abstract
“As animals navigate on a two-dimensional surface, neurons in the medial entorhinal …

Be the First to comment. Read More

How entorhinal grid cells encode volumetric space?

Grieves, R.M., Jedidi-Ayoub, S., Mishchanchuk, K. et al. Irregular distribution of grid cell firing fields in rats exploring a 3D volumetric space. Nat Neurosci (2021). https://doi.org/10.1038/s41593-021-00907-4

Abstract
We investigated how entorhinal grid cells encode volumetric space. On a …

Be the First to comment. Read More

How does the hippocampus represent 3D space in past, present and future?

Nicholas M. Dotson and Michael M. Yartsev. Nonlocal spatiotemporal representation in the hippocampus of freely flying bats. SCIENCE 09 JUL 2021 : 242-247

“The neural code for 3D map–based navigation in area CA1 of bats forms a continuum through …

Be the First to comment. Read More

What is the neural code for very large spaces?

Eliav T, Maimon SR, Aljadeff J, Tsodyks M, Ginosar G, Las L & Ulanovsky N, Multiscale representation of very large environments in the hippocampus of flying bats, Science 372, eabg4020 (2021). PDF | News&Views: Wood & Dudchenko

Abstract
“Hippocampal …

Be the First to comment. Read More

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