May 20

There were some fascinating results from recording the neural activity of mice when their whiskers were touched by an object. In some cases the mice would reach out with their whiskers to feel the object when it got close to them. The brain’s response to this stimulus was ten times stronger than in the mice who were simply touched by the object. The brain has a much more sensitive response to things the body has actively moved to get information about than something it passively knows.

-Yuji Ikegaya, “Consider How You Brain Feels