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N-Methyl-D-Aspartate receptors control in vivo striatal calcium and the updating of action policy

Legaria, A. A.; Barrett, M. R.; Czarny, J. E.; Kravitz, A. V.

2026-07-10 neuroscience
10.64898/2026.07.06.736480 bioRxiv
Show abstract

Animals must execute learned behaviors and update them when outcomes change, yet the neural substrates controlling this phenomenon are not fully understood. Here, we show that N-Methyl-D-Aspartate Receptors (NMDARs) in the dorsomedial striatum are necessary for learning from previously rewarded actions. Moreover, blocking of striatal NMDARs almost fully abolished striatal calcium dynamics, but not action potential activity, suggesting a unique function of NMDAR-driven striatal calcium activity in updating action policy.

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