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Neuron. 2016 Sep 21;91(6):1390-1401. doi: 10.1016/j.neuron.2016.08.010. Epub 2016 Sep 1.

Divisions of Identified Parvalbumin-Expressing Basket Cells during Working Memory-Guided Decision Making.

Author information

1
Department of Cognitive Neurobiology, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, A-1090, Vienna, Austria. Electronic address: michael.lagler@meduniwien.ac.at.
2
Department of Cognitive Neurobiology, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, A-1090, Vienna, Austria.
3
Department of Cognitive Neurobiology, Center for Brain Research, Medical University of Vienna, Spitalgasse 4, A-1090, Vienna, Austria. Electronic address: thomas.klausberger@meduniwien.ac.at.

Abstract

Parvalbumin-expressing basket cells tightly control cortical networks and fire remarkably stereotyped during network oscillations and simple behaviors. How can these cells support multifaceted situations with different behavioral options and complex temporal sequences? We recorded from identified parvalbumin-expressing basket cells in prefrontal cortex of freely moving rats performing a multidimensional delayed cue-matching-to-place task, juxtacellularly filled recorded neurons for unequivocal histological identification, and determined their activity during temporally structured task episodes, associative working-memory, and stimulus-guided choice behavior. We show that parvalbumin-expressing basket cells do not fire homogenously, but individual cells were recruited or inhibited during different task episodes. Firing of individual basket cells was correlated with amount of presynaptic VIPĀ (vasoactive intestinal polypeptide)-expressing GABAergic input. Together with subsets of pyramidal neurons, activity of basket cells differentiated for sequential actions and stimulus-guided choice behavior. Thus, interneurons of the same cell type can be recruited into different neuronal ensembles with distinct firing patterns to support multi-layered cognitive computations.

PMID:
27593181
DOI:
10.1016/j.neuron.2016.08.010
[Indexed for MEDLINE]
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