Volume 8 Supplement 2
Dense gap-junction connections support dynamic Turing structures in the cortex
© Steyn-Ross et al; licensee BioMed Central Ltd. 2007
Published: 6 July 2007
The recent report by Fukuda et al  provides convincing evidence for dense gap-junction connectivity between inhibitory neurons in the cat visual cortex, each neuron making 60 +/- 12 gap-junction dendritic connections with neurons in both the same and adjoining orientation columns. These resistive connections provide a source of diffusive current to the receiving neuron, supplementing the chemical-synaptic currents generated by incoming action-potential spike activity. Fukuda et al describe how the gap junctions form a dense and homogeneous electrical coupling of interneurons, and propose that this diffusion-coupled network provides the substrate for synchronization of neuronal populations.
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This article is published under license to BioMed Central Ltd.