TY - RPRT TI - Midbrain dopamine neurons encode internal effort signal AU - Wang, D. V. PY - 2020 DO - 10.1101/2020.03.04.976969 UR - https://www.biorxiv.org/content/10.1101/2020.03.04.976969v1 ID - 10.1101/2020.03.04.976969 ER -