Drawing a clock has become a standard test of cognitive impairment, but there’s no consensus on who should do it or how.

Nobel winner Santiago Ramón y Cajal preferred to draw his own renderings of neurons rather than avail himself of photomicrography's wonders.

A century ago, an ornithologist proposed a system for transcribing bird sound as human speech. It did not catch on.

How a classic Tweety Bird cartoon became a mainstay in linguistics research.