What's Out There?

[Angrboda]

What's fascinating is, we could all see colors differently but call them the same names. Like, your red could look like my blue but we'd both call it red. There are differences in color perception between individual people, men and women in general and I even notice the color temperature varying between my eyes.

That might be the case and nobody would ever know that what they see is not exactly the same color, if anything I ever saw as red, for example, you would always perceive as blue. But then, I'm sure neuroscientists have a way of finding out about stuff like that, so I'm sure there's something to tell whether that's the case or not.

[The] tongue TVSS system works by delivering electrotactile stimuli to the dorsum of the tongue via a flexible electrode array placed in the mouth. This electrode array is connected to a Tongue Display Unit [TDU] via a ribbon cable passing out of the mouth. A video camera records a picture, transfers it to the TDU for conversion into a tactile image. The tactile image is then projected onto the tongue via the ribbon cable where the tongue’s receptors pick up the signal. After training, subjects are able to associate certain types of stimuli to certain types of visual images. In this way, tactile sensation can be used for visual perception.

If an array of electrotactile stimulators can be perceived by the subject as visual stimuli, I suspect that much of the way our brain processes imagery is deeply embedded in the architecture of the brain.  I would be rather surprised if our subjective experiences of color differ dramatically, but I suppose that could be argued both ways.