If you’ve ever been to an eye doctor, there’s a good chance you’ve felt the sudden puff of air to the eye that constitutes a traditional test for glaucoma. It’s no one’s favorite experience, but the puff is non-invasive and harmless. Scientists use a similar method to test learning and memory in animals and humans.
Click here for original story, Researchers overcome winking, napping pigs to prove brain test works
Source: ScienceDaily