ABSTRACT
Many years ago I visited Norman Mackworth at Stanford Medical Institute when he was working with Karl Pribrim. Pribrim would surgically remove very tiny slices of brain tissue from rhesus monkeys and Mac would try to determine what impairment in perceptual behavior, if any, could be noticed later on. Outside his office on the day of my visit there were stashed about a dozen monkey filled cages, and of course I had to see them.
