Video: Watch rats detect an infrared light source
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The Globe and Mail
Six rats were implanted with electrodes that connect their brains to infrared sensors they wore on the tops of their heads. The electrodes were inserted into each animal’s somatosensory cortex – the part of a rat’s brain that is responsible for sensing touch, particularly through the whiskers. When the wired rats were placed in a situation where infrared lights were turned on and off around them, they first responded as though they were feeling an invisible touch to their whiskers. Within a few days, however, the rats’ responses changed and they were able to identify and move toward sources of infrared light as though “seeing” them in the distance