Only N=1, but I have noticed that while I am experiencing the aura effect during a migraine, I simultaneously have blind spots and in my vision and am able to keep reading. I cannot consciously see all the shapes of the letters of the words, but I can read them. For a while, I thought it was my brain being clever about filling in the gaps somehow. Now, I think perhaps some part of my brain still sees the words.
Can we actually read words and phrases and solve multi-step mathematical problems without our having consciously been aware of them? A team in the Psychology Department at the Hebrew University has conducted a series of experiments that give a positive answer: people can read and do math non-consciously.