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Contribution of Ih to LTP, Place Cells, and Grid Cells

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Presentation on theme: "Contribution of Ih to LTP, Place Cells, and Grid Cells"— Presentation transcript:

1 Contribution of Ih to LTP, Place Cells, and Grid Cells
Mayank R. Mehta  Cell  Volume 147, Issue 5, Pages (November 2011) DOI: /j.cell Copyright © 2011 Elsevier Inc. Terms and Conditions

2 Figure 1 Impact of HCN Channels on Grid and Place Fields
A model of the effects of HCN channels on grid and place fields. Each black disc represents a two-dimensional circular arena. Red dots depict areas with an elevated rate of spiking. When the hyperpolarization-activated cation current (Ih) is low (top), which could occur due to greater levels of HCN1 activation in the dorsal entorhino-hippocampal areas, lower levels of long-term potentiation (LTP) would result, leading to smaller grid fields and place fields. A reduction of Ih current (bottom) could result either from lower levels of HCN1 in the ventral entorhino-hippocampal areas or from the deletion of HCN1 channels. This leads to enhanced LTP that generates larger grid and place fields and makes them more stable on long timescales but more plastic on short timescales, which could enable faster learning of navigational maps. Cell  , DOI: ( /j.cell ) Copyright © 2011 Elsevier Inc. Terms and Conditions

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