这里是标题一h1占位文字

06.21/

2023

Functional network topography of the medial entorhinal cortex

Horst A. Obenhaus, Weijian Zong, R. Irene Jacobsen, Tobias Rose, Flavio Donato, Liangyi Chen, Heping Cheng, Tobias Bonhoeffer, May-Britt Moser, and Edvard I. Moser

Publication: PNAS
Read more: Functional network topography of the medial entorhinal cortex | PNAS

Abstract

The medial entorhinal cortex (MEC) creates a map of local space, based on the firing patterns of grid, head-direction (HD), border, and object-vector (OV) cells. How these cell types are organized anatomically is debated. In-depth analysis of this question requires collection of precise anatomical and activity data across large populations of neurons during unrestrained behavior, which neither electrophysiological nor previous imaging methods fully afford. Here, we examined the topographic arrangement of spatially modulated neurons in the superficial layers of MEC and adjacent parasubiculum using miniaturized, portable two-photon microscopes, which allow mice to roam freely in open fields. Grid cells exhibited low levels of co-occurrence with OV cells and clustered anatomically, while border, HD, and OV cells tended to intermingle. These data suggest that grid cell networks might be largely distinct from
those of border, HD, and OV cells and that grid cells exhibit strong coupling among themselves but weaker links to other cell types.