"Electrochemical signals" refers to the electrical impulses sent between cells in our bodies that help transmit information and coordinate various functions. Full definition
«Brain process takes paper shape: Paper - based device mimics electrochemical signalling in human brain.» (sciencedaily.com)
The most likely scenario, Shatz believed, was that the molecules sat on a neuron's postsynaptic terminals, where electrochemical signals from other neurons are received. (discovermagazine.com)
Our brains are composed of billions of individual cells called neurons, which communicate along millions of billions of channels with electrochemical signals. (discovermagazine.com)