If you are looking for a good book to read. I recommend this one.
This entire book was written by a man whose stroke plunged him into a 21 day coma. He awakened to find himself fully paralyzed except for one eye and a part of his head. He survived an entire month, enough to publish an entire book.
How did he do this?
He dictated his book one character at a time by blinking his left eyelid while an assistant recited letters.
200,000 blinks tells his entire story. He died 3 days after the book was published due to pneumonia.