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- W2945912171 abstract "The dorsomedial striatum (DMS) is critically involved in motor control and reward processing, but the specific neural circuit mediators are poorly understood. Recent evidence highlights the extensive connectivity of low-threshold spiking interneurons (LTSIs) within local striatal circuitry; however, the in vivo function of LTSIs remains largely unexplored. We employed fiber photometry to assess LTSI calcium activity in a range of DMS-mediated behaviors, uncovering specific reward-related activity that is down-modulated during goal-directed learning. Using two mechanistically distinct manipulations, we demonstrated that this down-modulation of LTSI activity is critical for acquisition of novel contingencies, but not for their modification. In contrast, continued LTSI activation slowed instrumental learning. Similar manipulations of fast-spiking interneurons did not reproduce these effects, implying a specific function of LTSIs. Finally, we revealed a role for the γ-aminobutyric acid (GABA)ergic functions of LTSIs in learning. Together, our data provide new insights into this striatal interneuron subclass as important gatekeepers of goal-directed learning." @default.
- W2945912171 created "2019-05-29" @default.
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- W2945912171 date "2019-07-01" @default.
- W2945912171 modified "2023-10-14" @default.
- W2945912171 title "Striatal Low-Threshold Spiking Interneurons Regulate Goal-Directed Learning" @default.
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- W2945912171 doi "https://doi.org/10.1016/j.neuron.2019.04.016" @default.
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