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Monsalve-Mercado, Mauro M. and Leibold, Christian ORCID logoORCID: https://orcid.org/0000-0002-4859-8000 (2017): Hippocampal Spike-Timing Correlations Lead to Hexagonal Grid Fields. In: Physical Review Letters, Vol. 119, No. 3, 38101

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Abstract

Space is represented in the mammalian brain by the activity of hippocampal place cells, as well as in their spike-timing correlations. Here, we propose a theory for how this temporal code is transformed to spatial firing rate patterns via spike-timing-dependent synaptic plasticity. The resulting dynamics of synaptic weights resembles well-known pattern formation models in which a lateral inhibition mechanism gives rise to a Turing instability. We identify parameter regimes in which hexagonal firing patterns develop as they have been found in medial entorhinal cortex.

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