Hiroyuki Arakawa has recently moved from Japan as an Associate Professor of Physiology to U-M, as an Assistant Research Scientist in the Department of Pharmacology, to ensure his enthusiasm for research proceeds further. He has a broad background in psychology and neuroscience, with specific training and expertise in behavioral mechanisms and circuit manipulation in rodent models. His research is focused on neural circuit dynamics regulating sociability that sustains amicable social life and deficiency relevant to autism spectrum disorders (ASD).