The experiment goes wrong. The electromagnetic frequency causes Leonard to enter a state of hyper-consciousness while his body becomes temporarily rigid. He is awake, aware, and floating inside the modified centrifuge, completely unable to move or speak.
(Peering inside) "Hmm. He’s not blinking. That’s either success or catastrophic neural failure. Penny, poke him with a stick."
"You’re sleeping on the couch. The robot can keep you company." La Teoria del Big Bang 9x7
"Temporarily suspend! There’s a difference. Death is permanent. This is just... a very aggressive nap."
"And ruin the control group? Absolutely not." The experiment goes wrong
"Correction: Tardigrada . They are the universe’s ultimate survivors. They can withstand radiation, the vacuum of space, and—more to the point—your passive-aggressive sighing. I am training them."
"Which is why I’m starting with Leonard." (Peering inside) "Hmm
"There it is."