Emeritus Professor Stephen Redman is renowned for pioneering advancements in understanding how nerve fibers communicate with their target cells. With a strong foundation in mathematics and electrical engineering, he developed equations that describe how excitatory currents move through complex nerve and muscle cells. Redman also introduced new methods for analysing the passive electrical properties of highly intricate cells, including spinal motoneurons. By recording responses of a single motoneuron to impulses from individual presynaptic nerve fibers, which he later labeled and visualised through histochemical techniques, he was able to precisely map the location and number of synaptic endings and their effects. This groundbreaking work, along with his earlier mathematical modeling, has earned him international recognition as a foremost expert in excitatory synaptic transmission.