Below is a selection of resources I found the most useful from my extensive research.
Eye & Brain- The Psychology of Seeing (5th Edition)
Richard L. Gregory
"Hearing Pictures, Seeing Sounds" by Rosie Mestel for the New Scientist, June 4, 1994, pp. 20-23.
"Doors of Perception" by Bruce Durie for the New Scientist, January 29, 2005, pp. 33-36.
"Seeing Without Sight" by Alison Motluk for the New Scientist, January 29, 2005, pp. 37-39.
"Senses special: The feeling of colour" by Helen Phillips for the New Scientist, January 29, 2005, pp. 40-43.
Kevin Warwick, Mark Gasson, Benjamin Hutt, and Iain Goodhew:
"An Attempt to Extend Human Sensory Capabilities by Means of Implant Technology"
Johann Borenstein and Iwan Ulrich, The University of Michigan:
"The GuideCane — A Computerized Travel Aid for the Active Guidance of Blind Pedestrians"
Makoto Ohuchi1,2,Yukio Iwaya1,Yˆoiti Suzuki1 and Tetsuya Munekata3, 1Research Institute of Electrical Communication, Tohoku University 2Department of Information Science for Human Welfare Tohoku Fukushi University 3National Institute of Special Education (NISE) Japan:
"Cognitive Map Formation of Blind Persons in a Virtual Sound Environment"
MSc. term paper by Mike Blow, University of Sussex, UK:
"The Unfulfilled Potential of Sensory Substitution"
Peter Meijer – www.seeingwithsound.com
Mark Tosczak - A New Way to Read, Not See, Maps
Lakshmi Sandhana - GPS to Help the Blind Navigate
Blind Learn To See With Tongue – YouTube Video
Seeing with Sound –YouTube Video