作者
Ipshita Zutshi, Jill K Leutgeb, Stefan Leutgeb
发表日期
2017/10/1
来源
Current opinion in behavioral sciences
卷号
17
页码范围
147-154
出版商
Elsevier
简介
Highlights
- Substituting head direction for movement direction accrues errors that preclude grid patterns.
- Only weak movement-direction signals have been identified in mEC.
- Movement-direction could be coded by a temporal rather than a rate code.
- Grid cell sequences can serve as a movement-direction signal to other cell types.
It has been proposed that path integration in mammals is performed by the convergence of internally generated speed and directional inputs onto grid cells. Although this hypothesis has been supported by the discovery that head direction, speed, and grid cells are intermixed within entorhinal cortex and by the recent finding that head-direction inputs are necessary for grid firing, many details on how grid cells are generated have remained elusive. For example, analysis of recording data suggests that substituting head direction for movement direction accrues errors that preclude the formation …
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I Zutshi, JK Leutgeb, S Leutgeb - Current opinion in behavioral sciences, 2017