Brain Has an On/Off Vision Switch

"A molecular on-off switch that controls how a mouse brain responds to vision loss has been discovered by biologists," reports Science Digest. "When the switch is on, the loss of sight in one eye will be compensated by the other eye, but also by tactile input from the whiskers. When the switch is off, only the other eye will take over. These findings may help improve patient susceptibility to sensory prosthetics such as cochlear implants or bionic eyes." Read more.