Selforganization of modular activity of grid cells | |
Urdapilleta, Eugenio; Si BL(斯白露); Treves, Alessandro | |
刊名 | HIPPOCAMPUS |
2017 | |
卷号 | 27期号:11页码:1204-1213 |
关键词 | Grid Cells Modules Self-organization |
ISSN号 | 1050-9631 |
产权排序 | 2 |
英文摘要 | A unique topographical representation of space is found in the concerted activity of grid cells in the rodent medial entorhinal cortex. Many among the principal cells in this region exhibit a hexagonal firing pattern, in which each cell expresses its own set of place fields (spatial phases) at the vertices of a triangular grid, the spacing and orientation of which are typically shared with neighboring cells. Grid spacing, in particular, has been found to increase along the dorso-ventral axis of the entorhinal cortex but in discrete steps, that is, with a modular structure. In this study, we show that such a modular activity may result from the self-organization of interacting units, which individually would not show discrete but rather continuously varying grid spacing. Within our adaptation network model, the effect of a continuously varying time constant, which determines grid spacing in the isolated cell model, is modulated by recurrent collateral connections, which tend to produce a few subnetworks, akin to magnetic domains, each with its own grid spacing. In agreement with experimental evidence, the modular structure is tightly defined by grid spacing, but also involves grid orientation and distortion, due to interactions across modules. Thus, our study sheds light onto a possible mechanism, other than simply assuming separate networks a priori, underlying the formation of modular grid representations. |
WOS关键词 | MEDIAL ENTORHINAL CORTEX ; SPATIAL MAP ; PLACE CELLS ; REPRESENTATION ; HIPPOCAMPUS ; DIRECTION ; DORSAL ; FIELDS ; SPACE ; MODEL |
WOS研究方向 | Neurosciences & Neurology |
语种 | 英语 |
WOS记录号 | WOS:000413539000007 |
资助机构 | 7th EU Framework Programme [GRIDMAP 600725] ; Argentinian CONICET [PIP 11220150100013] ; Distinguished Young Scholar Project of the Talents Program of China [Y5A1370101] |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/21111] |
专题 | 沈阳自动化研究所_机器人学研究室 |
通讯作者 | Treves, Alessandro |
作者单位 | 1.División de Física Estadística e Interdisciplinaria, Centro Atómico Bariloche, S. C. de Bariloche, Río Negro, 8400, Argentina 2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110016, China 3.Cognitive Neuroscience, SISSA, Trieste, 34136, Italy |
推荐引用方式 GB/T 7714 | Urdapilleta, Eugenio,Si BL,Treves, Alessandro. Selforganization of modular activity of grid cells[J]. HIPPOCAMPUS,2017,27(11):1204-1213. |
APA | Urdapilleta, Eugenio,Si BL,&Treves, Alessandro.(2017).Selforganization of modular activity of grid cells.HIPPOCAMPUS,27(11),1204-1213. |
MLA | Urdapilleta, Eugenio,et al."Selforganization of modular activity of grid cells".HIPPOCAMPUS 27.11(2017):1204-1213. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论