How many senses are there?

Right. You can reproduce, in the lab, many situations where sensory information is not brought to consciousness, but affect the underlying "zombie" (unconscous) systems that could then give rise to the feeling of "presence."A great one I heard in a talk about synaesthesia last night was that, in some test, a person who has synaesthesia for numbers (sees numbers with color) couldn't determine consciously what number was showing in a display (due to some specifics of the experimental situation), but COULD see the synaesthesia-generated color, and thus could accurately determine the number by simple deduction. How freaking cool is that?Dr. V. S. Ramachandran @ Becoming Human: "Synaesthesia" (21:55 - 24:00) (requires Real player)P.S. Great talk, of course. By the way, he talks about a COLORBLIND Synaesthete in there (just after the end of the section mentioned above). AWESOME haha. But of course, some things he says has to be taken with a "grain of thought"