Alexander Friedman, Emily Hueske, Sabrina M Drammis, Sebastian E Toro Arana, Erik D Nelson, Cody W Carter, Sebastien Delcasso, Raimundo X Rodriguez, Hope Lutwak, Kaden S DiMarco, Qingyang Zhang, Lara I Rakocevic, Dan Hu, Joshua K Xiong, Jiajia Zhao, Leif G Gibb, Tomoko Yoshida, Cody A Siciliano, Thomas J Diefenbach, Charu Ramakrishnan, Karl Deisseroth, Ann M Graybiel
Learning valence-based responses to favorable and unfavorable options requires judgments of the relative value of the options, a process necessary for species survival. We found, using engineered mice, that circuit connectivity and function of the striosome compartment of the striatum are critical for this type of learning. Calcium imaging during valence-based learning exhibited a selective correlation between learning and striosomal but not matrix signals. This striosomal activity encoded discrimination learning and was correlated with task engagement, which, in turn, could be regulated by chemogenetic excitation and inhibition...
November 12, 2020: Cell