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Feedforward Inhibition of Projection Neurons by Fast-Spiking GABA Interneurons in the Rat Striatum<i>In Vivo</i>

Feedforward Inhibition of Projection Neurons by Fast-Spiking GABA Interneurons in the Rat... The Journal of Neuroscience, April 13, 2005 • 25(15):3857–3869 • 3857 Behavioral/Systems/Cognitive Feedforward Inhibition of Projection Neurons by Fast- Spiking GABA Interneurons in the Rat Striatum In Vivo 1 1 2 1 Nicolas Mallet, Catherine Le Moine, Ste´phane Charpier, and Franc¸ois Gonon 1 2 Centre National de la Recherche Scientifique, Unite´ Mixte de Recherche 5541, Universite´ Victor Segalen Bordeaux 2, 33076 Bordeaux, France, and Institut National de la Sante´ et de la Recherche Me´dicale, Unite´ 114, Chaire de Neuropharmacologie, Colle`ge de France, 75231 Paris, France Discharge activities and local field potentials were recorded in the orofacial motor cortex and in the corresponding rostrolateral striatum of urethane-anesthetized rats. Striatal projection neurons were identified by antidromic activation and fast-spiking GABAergic inter- neurons (FSIs) by their unique characteristics: briefer spike and burst responses. Juxtacellular injection of neurobiotin combined with parvalbumin immunohistochemistry validated this identification. Spontaneous activities and spike responses to cortical stimulation were recorded during both states of cortical activity: slow waves and desynchronization. Both FSI and projection neurons spontaneously discharged synchronously with slow waves at the maximum of cortical activity, but, on average, FSIs were much more active. Cortical desynchronization enhanced FSI activity and facilitated their spike responses to cortical stimulation, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neuroscience Unpaywall

Feedforward Inhibition of Projection Neurons by Fast-Spiking GABA Interneurons in the Rat Striatum<i>In Vivo</i>

Journal of NeuroscienceApr 13, 2005
13 pages

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References (52)

Publisher
Unpaywall
ISSN
0270-6474
DOI
10.1523/jneurosci.5027-04.2005
Publisher site
See Article on Publisher Site

Abstract

The Journal of Neuroscience, April 13, 2005 • 25(15):3857–3869 • 3857 Behavioral/Systems/Cognitive Feedforward Inhibition of Projection Neurons by Fast- Spiking GABA Interneurons in the Rat Striatum In Vivo 1 1 2 1 Nicolas Mallet, Catherine Le Moine, Ste´phane Charpier, and Franc¸ois Gonon 1 2 Centre National de la Recherche Scientifique, Unite´ Mixte de Recherche 5541, Universite´ Victor Segalen Bordeaux 2, 33076 Bordeaux, France, and Institut National de la Sante´ et de la Recherche Me´dicale, Unite´ 114, Chaire de Neuropharmacologie, Colle`ge de France, 75231 Paris, France Discharge activities and local field potentials were recorded in the orofacial motor cortex and in the corresponding rostrolateral striatum of urethane-anesthetized rats. Striatal projection neurons were identified by antidromic activation and fast-spiking GABAergic inter- neurons (FSIs) by their unique characteristics: briefer spike and burst responses. Juxtacellular injection of neurobiotin combined with parvalbumin immunohistochemistry validated this identification. Spontaneous activities and spike responses to cortical stimulation were recorded during both states of cortical activity: slow waves and desynchronization. Both FSI and projection neurons spontaneously discharged synchronously with slow waves at the maximum of cortical activity, but, on average, FSIs were much more active. Cortical desynchronization enhanced FSI activity and facilitated their spike responses to cortical stimulation,

Journal

Journal of NeuroscienceUnpaywall

Published: Apr 13, 2005

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