Bone conduction bypasses the eardrums by using the skull's vibrations to send sound directly to the brain. Want to try it?Sanae, what's that shaking noise?It's a bone-conduction headphone, they tend to leak sound you know...Bone conduction?No, no...It's not telepathy, that's impossible...Directly into the head? How ridiculous...Famichiki, please...This does go right into the head...!?