Rethinking Single Neuron Electrical Compartmentalization: Dendritic Contributions to Network Computation In Vivo
| Autor: | Mark T. Harnett, Valerio Francioni |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Neurons
0301 basic medicine Computer science Pyramidal Cells General Neuroscience Computation Action Potentials Dendrites Compartmentalization (psychology) Mice 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure In vivo Synaptic plasticity medicine Biological neural network Animals Soma Neuron Axon Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience. 489:185-199 |
| ISSN: | 0306-4522 |
| Popis: | Decades of experimental and theoretical work support a now well-established theory that active dendritic processing contributes to the computational power of individual neurons. This theory is based on the high degree of electrical compartmentalization observed in the dendrites of single neurons in ex vivo preparations. Compartmentalization allows dendrites to conduct semi-independent operations on their inputs before final integration and output at the axon, producing a "network-in-a-neuron." However, recent in vivo functional imaging experiments in mouse cortex have reported surprisingly little evidence for strong dendritic compartmentalization. In this review, we contextualize these new findings and discuss their impact on the future of the field. Specifically, we consider how highly coordinated, and thus less compartmentalized, activity in soma and dendrites can contribute to cortical computations including nonlinear mixed selectivity, prediction/expectation, multiplexing, and credit assignment. |
| Databáze: | OpenAIRE |
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