I'm sorry I started this thread. Never mind.
Don't be`sorry...keep posting what you find ...it might do something for you even with no scientific basis. I have grounding straps from work which I wore for several hours a day for about 4 years...it never occurred to me at the time that it did anything but keep some electronic components from being damaged by static. I'm thinking you are probably not hard grounded since most setups like that have a resistor built in to keep you from getting shocked accidentally so a perfect hard ground may not matter at all. Its not as easy as you would think to get a really good ground on your skin...most of us where I worked had to use special lotion to get a decent ground. I think if there is any benefit from sleeping semi grounded it would take a long time see to a difference at least months...everyone is being semi grounded somewhat throughout the day anyway so really your just extending what we are already do to your bed.