There was a book written by a man with locked-in syndrome after a stroke. It made me want to write a living will.

"The entire book was written by Bauby blinking his left eyelid, which took ten months (four hours a day). A transcriber repeatedly recited a French language frequency-ordered alphabet (E, S, A, R, I, N, T, U, L, etc.), until Bauby blinked to choose the next letter. The book took about 200,000 blinks to write and an average word took approximately two minutes. The book also chronicles everyday events for a person with locked-in syndrome."

http://en.wikipedia.org/wiki/The_Diving_Bell_and_the_Butterf...