How Cumulative Error in Grid Cell Firing Is Literally Bounded by the Environment
نویسندگان
چکیده
In this issue of Neuron, Hardcastle et al. (2015) show that the spatial firing patterns of grid cells accumulate error, drifting coherently, until reset by encounters with environmental boundaries. These results reveal important aspects of the neural dynamics of self-localization from self-motion and environmental information.
منابع مشابه
مدل شبکه ی عصبی از نگاشت سلول‌های شبکه به سلول‌های مکانی
Abstract: Medial entorhinal cortex is known to be the hub of a brain system for navigation and spatial representation. These cells increase firing frequency at multiple regions in the environment, arranged in regular triangular grids. Each cell has some properties including spacing, orientation, and phase shift of the nodes of its grid. Entorhinal cortex is commonly perceived to be the major in...
متن کاملHow environment and self-motion combine in neural representations of space.
Estimates of location or orientation can be constructed solely from sensory information representing environmental cues. In unfamiliar or sensory-poor environments, these estimates can also be maintained and updated by integrating self-motion information. However, the accumulation of error dictates that updated representations of heading direction and location become progressively less reliable...
متن کاملSize Matters: How Scaling Affects the Interaction between Grid and Border Cells
Many hippocampal cell types are characterized by a progressive increase in scale along the dorsal-to-ventral axis, such as in the cases of head-direction, grid and place cells. Also located in the medial entorhinal cortex (MEC), border cells would be expected to benefit from such scale modulations. However, this phenomenon has not been experimentally observed. Grid cells in the MEC of mammals i...
متن کاملIII - 14 . Time - warped PCA : simultaneous alignment and dimensionality reduc - tion of neural data
firing patterns, e.g. by producing stochastic drift in grid attractor networks. Recently, Hardcastle et al. (Neuron, 2015) proposed that border cells may provide one mechanism for correcting such drift. We construct a model in which experience-dependent Hebbian plasticity during exploration allows border cells to self-organize their responses, while also learning connectivity to grid cells whic...
متن کاملNeural mechanisms for spatial computation
Locating oneself within an environment, remembering goal locations and planning routes are fundamental cognitive functions (Wolbers & Hegarty, 2010). Profound insights into the mechanisms for these cognitive abilities have come from the discovery of neurons in the hippocampus and entorhinal cortex with spatial firing properties. These neurons, which include place cells (O’Keefe, 1976), head dir...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Neuron
دوره 86 شماره
صفحات -
تاریخ انتشار 2015