So, one of the technologies I've been researching while working on my BCI, is the interception of action potentials in a manner that's reversible and doesn't require you to perform a nerve block with anesthetic every time you want to do it. In order to achieve effective immersion, without interference from ambient stimuli, and get the most of a virtual reality experience, this is kind of a must. So, I turned to electrical nerve blocks. In my research thus far, electrodes have always been placed on the nerve itself. However, logic dictates that if I use skin-contact electrodes, and place them far enough apart, and run enough current through them, the same results can be achieved.
I've almost got everything I need to do a test of my theory together, I just need to finish assembling my electrodes, acquire a decent AC signal generator, and figure out how to hold everything in place. I'll be attempting to block the radial, median, and ulnar nerves in my left arm starting from just below my elbow, since the nerves are closer to the surface of the skin there. I'll probably attempt to do a cathodic block with DC while I wait on the AC signal generator, but based on the numbers I've seen, which label the skin as a 1000 ohm resistor when wet, I'm looking at 3000 ohms of resistance. According to one study, a human sacral nerve was blocked with a current of 7 mA applied directly to the nerve, and since the current saturation of the tissue of the body behaves in a uniform way the further you move from the electrode, I estimated that 20 mA's would be sufficient to block the nerves without direct contact. Using Ohm's law, that puts me at 60 volts.