Use blindfolds or darkened environments to force the participant to rely on other senses.

As the darkness took him, the world didn't go quiet. It went . The crushing atmospheric pressure of Cytherea didn't feel like a weight anymore; it felt like a symphony of vibrations. Without his eyes to lie to him, Aris "saw" the station not as steel and glass, but as a flickering heartbeat of energy against the roaring baseline of the planet.