It has a special sensory area located above the screen, which eliminates the need to use the on - screen menu. (goodereader.com)
Then they gave the animals strokes, cutting off blood to the artery supplying motor and sensory areas of the brain. (discovermagazine.com)
An additional reason has been the beautiful neuroimaging in the last 10 years or so, which confirms that at least simple hallucinations tend to arise in sensory areas... (newscientist.com)