I've never been in an anechoic chamber, but I've read many times that some people find it very disturbing. I've been in a few caves in a 'lights-out' moment, and it's true - you're not prepared for the level of darkness.

Turning out the lights in a cave, or going into an anechoic chamber achieve is a taste of what a full sensory deprivation experience achieves...

http://www.wired.com/wiredscience/2009/10/hallucinations/

On the other hand, there's are those that enjoy the 'liberating' experience of sensory deprivation. I know that there are restaurants where one dines in complete darkness. The idea being that the deprivation of sight forces your mind to focus intensely on the taste of the food. Not sure I'm brave enough to try it, but it's a fascinating idea.

http://www.darkdining.com/index_main.php

I wonder if anyone's thought of creating a restaurant that combines both total darkness and an anechoic chamber... ;\) Perhaps the sound of one's chewing would be deafening.

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