[quote/]
One of the advantages of reacting before becoming aware of the action ... [/quote]

I was not talking about inpulsive reaction
I was talking about intentional actions

You are told :

"push a button when you like "

Our brain has been mapped

A ) Some area of our brain become active when we take a decision or better when we suppose to take a decision

B) Some area become active when we move a finger

You would expect that area "A" are enabled a fraction of time before area "B"

The other way round

It seems that human being do not take decisions , they only
become aware that a certain decision has been taken

Btw in an other thread I quoted the book "Who's in charge ?"
It confirm exactly such assumption