Jeff Hawkins' team of researchers and the people behind NuPIC and Numenta.org, at least, given how it was explained to me, believe that the human brain does com

Jeff Hawkins' team of researchers and the people behind NuPIC and Numenta.org, at least, given how it was explained to me, believe that the human brain does compute digitally (ie the analog values don't matter, the presence or absence of the signals do). Geoff Hinton also appears to believe that the biological neural signals are interpreted in a binary way. I could have misinterpreted their work, though, as I'm far from an expert, but that's what it sounded like to me.