Edgar Adrian

Edgar Adrian proved that nerve impulses follow an "all-or-nothing" principle, meaning a neuron either fires at its maximum strength or it does not fire at all. He discovered that the brain perceives the intensity of a stimulus not by the strength of the signal, but by the frequency of the electrical impulses sent.

Adrian shared the 1932 Nobel Prize in Physiology or Medicine with the British neuroscientist Charles Scott Sherrington. They were jointly recognized for their foundational discoveries regarding the functions of neurons in the nervous system.

Adrian used highly sensitive oscilloscopes and capillary electrometers to amplify and observe the incredibly small electrical signals in individual nerve fibers. He famously conducted early experiments on the optic nerve of a horseshoe crab to map how sensory information is transmitted to the brain.

Yes, Edgar Adrian had a highly distinguished career in academia, serving as the president of the Royal Society from 1950 to 1955. He was also created a life peer as Baron Adrian in 1955, actively participating in the House of Lords on matters of science and education.