Dynamics of the Hippocampal Ensemble Code for Space¶
Wilson, M. A., & McNaughton, B. L. (1993). Dynamics of the Hippocampal Ensemble Code for Space. Science, 261(5124), 1055-1058.
Cited by¶
2 citations across 2 artifacts.
Each citation links to the sentence it supports in the citing article.
Domain-specific¶
- Place Field
- Field formation in a novel environment proceeds over minutes to hours as an initially noisy population converges on a stable spatial code, a process dependent on LTP-like plasticity at entorhinal-hippocampal synapses and on off-line replay during subsequent sleep
This sourceEnsemble recordings showing that the hippocampal code for a novel space is initially less robust but improves rapidly with exploration, with suppressed inhibitory-cell activity taken to favour the synaptic modification involved in learning.
Supported in partVerified against the publisher's abstract
“In a novel space, the ensemble code was initially less robust but improved rapidly with exploration.”
- Field formation in a novel environment proceeds over minutes to hours as an initially noisy population converges on a stable spatial code, a process dependent on LTP-like plasticity at entorhinal-hippocampal synapses and on off-line replay during subsequent sleep
Mechanisms¶
- Sparse Dictionary or Basis Learning
- The guarding discipline is to confirm the basis actually spans the inputs — retraining a learned basis when statistics drift, or verifying a fixed basis covers the signal — and to watch reconstruction error, in the spirit of the population-coding tradition that reads a target back from such sparse codes.
This sourceDemonstrates that position can be decoded from the sparse ensemble activity of hippocampal place cells.
- The guarding discipline is to confirm the basis actually spans the inputs — retraining a learned basis when statistics drift, or verifying a fixed basis covers the signal — and to watch reconstruction error, in the spirit of the population-coding tradition that reads a target back from such sparse codes.
Verification¶
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Registry ID ref:e24830416e07 · see in the full table