Synapse distribution suggests a two-stage model of dendritic integration in CA1 pyramidal neurons.

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Neuron. 2009 Jul 30;63(2):171-7. doi: 10.1016/j.neuron.2009.06.023

Synapse distribution suggests a two-stage model of dendritic integration in CA1 pyramidal neurons. Spruston LabMenon Lab

Katz Y, Menon V, Nicholson DA, Geinisman Y, Kath WL, Spruston N

Note: Research in this publication was not performed at Janelia.

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Abstract

Competing models have been proposed to explain how neurons integrate the thousands of inputs distributed throughout their dendritic trees. In a simple global integration model, inputs from all locations sum in the axon. In a two-stage integration model, inputs contribute directly to dendritic spikes, and outputs from multiple branches sum in the axon. These two models yield opposite predictions of how synapses at different dendritic locations should be scaled if they are to contribute equally to neuronal output. We used serial-section electron microscopy to reconstruct individual apical oblique dendritic branches of CA1 pyramidal neurons and observe a synapse distribution consistent with the two-stage integration model. Computational modeling suggests that the observed synapse distribution enhances the contribution of each dendritic branch to neuronal output.

PMID: 19640476 [PubMed - indexed for MEDLINE]

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Synapse distribution suggests a two-stage model of dendritic integration in CA1 pyramidal neurons.

Note: Research in this publication was not performed at Janelia.

Abstract

PMID: 19640476 [PubMed - indexed for MEDLINE]

Janelia Authors