Since Tom arrived at Guantanamo Bay he has been exposed to different forms of torture: sleep deprivation, sensory deprivation, extreme temperatures, prolonged isolation, lack of sunlight and limited health care.

It is hard, perhaps even impossible, to define normal sensory perception.

This means that our perception of any situation depends only partly on sensory signals being received at that time.

What if we all are brains in vats and every sensory perception is illusionary?

All sensory pleasures activate the minds of the noble-natured. They shut down the minds of the unnoble.

Tentacles usually occur in pairs, sometimes with both sensory and manipulatory functions.