There was an experiment done by researchers, and they scanned the brains of women knitting in a brain scanner. They were able to look at a tv screen while doing so. The screen first showed/told them to use a knot that they already knew how to do. The scan showed very little activity, only a small red dot in the unconscious zone. Then they were shown an unknown knot, and the scan lit up on both sides, purple, blue, until they learned the new knot, and then back to a small red dot again. They fumbled and staggered, lead arm, until it was memorized, and then the scan quieted down.