The Vierbuchen laboratory seeks to elucidate fundamental mechanisms governing the production of the myriad neuronal cell types required to build functioning neural circuits. To model these dynamic developmental processes, we direct the differentiation of mouse and human pluripotent stem cells into specific neuronal cell types in a dish. This reductionist system allows us to recapitulate neural tube patterning and neuronal differentiation under controlled conditions and at a scale that makes it possible to use genetic screens, genomics, and systems genetics to characterize the underlying cell signaling and gene regulatory processes with unprecedented resolution. In the long term, we will apply these insights to better understand the complex genetic underpinnings of psychiatric and neurodegenerative disease.