http://www.dailykos.com/story/2013/0...ementia-Quilts#
http://blog.laurawestkong.com/2008/1...eimers-part-2/
There are lots of other sites that come up. Although most are listed under dementia/Alzheimer's most of the documentation also refers to traumatic brain injuries.
you could combine Tartan's idea of visually interesting squares with textured squares, minkee, corduroy, velveteen, fleece etc.