Partial coherence and frustration in self-organizing spherical grids

F. Stella, E. Urdapilleta, Y. Luo, A. Treves, Hippocampus (2019).

Download
OA 2.37 MB

Journal Article | Epub ahead of print | English
Author
; ; ;
Department
Abstract
Nearby grid cells have been observed to express a remarkable degree of long-rangeorder, which is often idealized as extending potentially to infinity. Yet their strict peri-odic firing and ensemble coherence are theoretically possible only in flat environments, much unlike the burrows which rodents usually live in. Are the symmetrical, coherent grid maps inferred in the lab relevant to chart their way in their natural habitat? We consider spheres as simple models of curved environments and waiting for the appropriate experiments to be performed, we use our adaptation model to predict what grid maps would emerge in a network with the same type of recurrent connections, which on the plane produce coherence among the units. We find that on the sphere such connections distort the maps that single grid units would express on their own, and aggregate them into clusters. When remapping to a different spherical environment, units in each cluster maintain only partial coherence, similar to what is observed in disordered materials, such as spin glasses.
Publishing Year
Date Published
2019-07-11
Journal Title
Hippocampus
ISSN
eISSN
IST-REx-ID

Cite this

Stella F, Urdapilleta E, Luo Y, Treves A. Partial coherence and frustration in self-organizing spherical grids. Hippocampus. 2019. doi:10.1002/hipo.23144
Stella, F., Urdapilleta, E., Luo, Y., & Treves, A. (2019). Partial coherence and frustration in self-organizing spherical grids. Hippocampus. https://doi.org/10.1002/hipo.23144
Stella, Federico, Eugenio Urdapilleta, Yifan Luo, and Alessandro Treves. “Partial Coherence and Frustration in Self-Organizing Spherical Grids.” Hippocampus, 2019. https://doi.org/10.1002/hipo.23144.
F. Stella, E. Urdapilleta, Y. Luo, and A. Treves, “Partial coherence and frustration in self-organizing spherical grids,” Hippocampus, 2019.
Stella F, Urdapilleta E, Luo Y, Treves A. 2019. Partial coherence and frustration in self-organizing spherical grids. Hippocampus.
Stella, Federico, et al. “Partial Coherence and Frustration in Self-Organizing Spherical Grids.” Hippocampus, Wiley, 2019, doi:10.1002/hipo.23144.
All files available under the following license(s):
Creative Commons License:
CC-BYCreative Commons Attribution 4.0 International Public License (CC-BY 4.0)
Main File(s)
Access Level
OA Open Access
Last Uploaded
2019-08-12T07:53:33Z


Export

Marked Publications

Open Data IST Research Explorer

Sources

PMID: ppr71435
PubMed | Europe PMC

Search this title in

Google Scholar