The goal of our research is to understand how decision-making and working memory behaviors are implemented by neuronal circuits in the mammalian cortex. In many daily behaviors, we use sensory information from our surroundings to choose between multiple alternatives and to guide our future actions. For example, when walking along a street, we use visual landmarks to decide and plan whether to turn right or left at an upcoming intersection to reach our destination. Our laboratory is interested in the microcircuit and cellular mechanisms of how sensory evidence is used to guide behaviors through perceptual decision computations in mouse cortical circuits. We focus on the posterior parietal cortex (PPC), which is at the interface of sensation and action and is thought to be important for decision-related processes.