Early users of the prototype gizmo would wear a blindfold and then try to navigate around just by the electrical impulses on their tongues. What's most interesting is not only were they able to do this, but they reported that, after a while, their memories were not of sensations on their tongues, but of seeing a fuzzy, black and white image.
The brain is wonderfully plastic, able to interpret new kinds of sensory input in amazing ways. It can rewire itself to accommodate the new input; in fact, the tongue-electrode thing is being commercialized as a device for the blind.
As I do, when i first heard about this, I naturally thought "how can this be used for sex?" And I think it has fantastic potential.
Imagine, if you will, a wearable dildo, rather like the Feeldoe, that's designed to have one end inserted in the vagina. Only imagine that we take the same kind of electrodes used in the tongue-camera device, and send signals to the electrodes not from a video camera, but from small touch sensitive sensors mounted just below the skin of the dildo.
These sensors would be mapped onto the electrodes so that when something touches the sensor, you'd feel a corresponding signal from the corresponding electrode.
I'm not an artist, but I made a couple of crude animations to illustrate the idea:
What would happen?
I believe that after a period of adjustment, this dildo would be incorporated into the brain's somatosensory perception. The brain would, in essence, modify its model of the body to accommodate the dildo--it would, rather quickly I suspect, cease to be perceived as a thing and become perceived as a part of the body. Stimulation of the dildo would begin to feel like stimulation of yourself.
And isn't that an interesting idea.
The neural density in the walls of the vagina isn't as great as the neural density of the tongue. I don't think that's a problem, though; the neural density of the shaft of the penis isn't as great, either.
One potentially interesting twist on this notion is to map the most sensitive part of the penis, the underside just below the glans, onto the most sensitive part of the body--the clitoris. The sensors of the shaft would map onto electrodes in the bulb worn inside the vagina, except this part, which would map onto the clitoris--mapping the sensitivity of a natural penis.
Another potentially interesting thing to do is to make the sensors on the dildo pressure sensitive, with firmer touches creating stronger impulses from the electrodes.
Now, there's a lot of experimentation between this idea and a real device. I don't know the neural density in the walls of the vagina, but it would impose a limit on how many electrodes could be placed on the dildo. Would there be sufficient density to be able to create a fine tactile sense? I think the answer is probably "yes," but I'm not sure.
I'm also not sure how much processing would be required. I'm guessing not much; certainly much less than is required with the vision sense. The tongue-vision thing is trying to do something far more complicated; it's trying to register sufficient information to allow you to navigate a three-dimensional world. A circle seen by the camera might be a lollipop right in front of your face or a billboard far away; because the tongue has no way to represent stereo imagery, there's no way to tell. So the processor has to allow the operator to be able to zoom in and out, to give the user a sense of how far away things might be. It has to be able to adjust to different lighting conditions.
The dildo, by way of contrast, merely has to respond to physical touch, which maps much more easily onto the array of electrodes. It's pretty straightforward; if something's not touching a particular sensor, its electrode isn't producing a signal. The amount of processing might be low enough to allow the processor to be housed inside the dildo, making the device compact, and not requiring it to be tethered to any electronics.
I think this thing could be hella fun. It would allow people born with vaginas to have a remarkably good impression of what it's like to be born with a penis.
In a world where I had infinite free time, I'd put together a crowdfunding campaign to try to build a working prototype. Even without infinite time, I'm considering doing this. Thoughts? Opinions?
Want to keep up with developments? Here's a handy list of blog posts about it: