作者
A David Redish, Francesco P Battaglia, Monica K Chawla, Arne D Ekstrom, Jason L Gerrard, Peter Lipa, Ephron S Rosenzweig, Paul F Worley, John F Guzowski, Bruce L McNaughton, Carol A Barnes
发表日期
2001
简介
In neocortex, neighboring neurons frequently exhibit correlated encoding properties. There is conflicting evidence whether a similar phenomenon occurs in hippocampus. To assess this quantitatively, a comparison was made of the spatial and temporal firing correlations within and between local groups of hippocampal cells, spaced 350–1400 μm apart. No evidence of clustering was found in a sample of 3000 neurons. Moreover, cells active in two environments were uniformly interspersed at a scale of 100 μm, as assessed by the activity-induced gene Arc. Independence of encoding characteristics implies uncorrelated inputs, which could enhance the capacity of the hippocampus to store arbitrary associations.
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AD Redish, FP Battaglia, MK Chawla, AD Ekstrom… - 2001