via one of my students I found out about this very interesting article on a recently discovered kind of synesthesia where people report feeling the touches they see on other people (Here). One of the interesting things about this  is that, to some degree, we are all mirror-touch synesthetes. That is, we all have neurons that mirror activity that we see other people do, these people just have an over-developed mirror neuron network. I wonder if it is the same for all forms of syesthesia? Do we all taste words just a little bit? Do we all hear colors just slightly?

Of course, also interesting is the fact that a significant number of these people report thinking that their experiences were perfectly normal (the article has a nice anecdotal story about this)…