Next idea to develop
A man who has studied Buddhism gets put into (whatever the SCP is that I'm thinking of) set to 'Fine' while meditating, with the goal of achieving 'Total Consciousness'. Sadly, he gets his wish. Total consciousness of every nerve, every cell, every sensation of his existance, with not ability to block it out. References include all the basic things we learn to shut out (everything from the feelings of peristalsis to the constant barrage of info from our skin, ears, eyes, tongue, etc.) Not unmixed; intelligence is way up, and physical awareness allows for almost inhuman bodily control, and healing. But existence is a constant hell of too many sensations.