Synaptic summation is the technical term used in neurophysiology for those instances in which some neuron C is fired only by a combination of neurons A and B.
“When the soul looks out of its body, it should see only beauty in its path. These are the sights we must hold in mind, in order to move to a higher place.”
“A half truth, like half a brick, is always more forcible as an argument than a whole one. It carries better.”