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Inhibitory control of neostriatal projection neurons by GABAergic interneurons

Inhibitory control of neostriatal projection neurons by GABAergic interneurons The basal ganglia are a highly interconnected network of nuclei essential for the modulation and execution of voluntary behavior. The neostriatum is the principal input and one of the principal controllers of the output of the basal ganglia. Neostriatal projection neurons seem to be dynamically and powerfully controlled by GABAergic inputs, but the source(s) and physiological properties of these inputs remain unclear. Here we use paired whole-cell recordings to show that this inhibition derives from small populations of GABAergic interneurons that are themselves interconnected through functional electrotonic synapses. Inhibitory synaptic potentials generated from single interneurons are sufficiently powerful to delay or entirely block the generation of action potentials in a large number of projection neurons simultaneously. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Neuroscience Springer Journals

Inhibitory control of neostriatal projection neurons by GABAergic interneurons

Nature Neuroscience , Volume 2 (5) – May 1, 1999

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References (52)

Publisher
Springer Journals
Copyright
Copyright © 1999 by Nature America Inc.
Subject
Biomedicine; Biomedicine, general; Neurosciences; Behavioral Sciences; Biological Techniques; Neurobiology; Animal Genetics and Genomics
ISSN
1097-6256
eISSN
1546-1726
DOI
10.1038/8138
Publisher site
See Article on Publisher Site

Abstract

The basal ganglia are a highly interconnected network of nuclei essential for the modulation and execution of voluntary behavior. The neostriatum is the principal input and one of the principal controllers of the output of the basal ganglia. Neostriatal projection neurons seem to be dynamically and powerfully controlled by GABAergic inputs, but the source(s) and physiological properties of these inputs remain unclear. Here we use paired whole-cell recordings to show that this inhibition derives from small populations of GABAergic interneurons that are themselves interconnected through functional electrotonic synapses. Inhibitory synaptic potentials generated from single interneurons are sufficiently powerful to delay or entirely block the generation of action potentials in a large number of projection neurons simultaneously.

Journal

Nature NeuroscienceSpringer Journals

Published: May 1, 1999

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