GR translation: a felt darkening

[Paul Mackin]

On 6/26/2011 4:01 PM, Mike Jing wrote:
> P79.40-41  A numbness has taken over, or a felt darkening.
>
> What is "a felt darkening" exactly?  What is being described here?
>   		 	   		
Think it just means the room feels darker.

When the experiment begins, the required complete silence is felt and 
somehow this gives people a companion sensation of numbness or darkening.

It must have got really really quiet.