Neurons communicate electrically, so to understand how they produce such brain functions as memory, neuroscientists must track how their voltage changes — sometimes subtly — on the timescale of milliseconds. In a new open-access paper in Nature Communications, MIT researchers describe a novel image sensor with the capability to substantially increase that ability.The invention led by Jie Zhang, a postdoc in the lab of Matt Wilson, who is the Sherman Fairchild Professor at MIT and member of The Picower Institute for Learning and Memory, is a new take on the…