The subject awakes to consciousness of his environment

13:19 Nov 3, 2014 

Thanks Gallagy for the "improvement" comment, I didn't put too much work into it, just wanted Ahmad to understand it better for his translation into whichever language it's supposed to be in (which is how I understood the original question).
It's definitely not supposed to be used for literal translation because I've been quite lazy/quick in constructing the paraphrased sentences.
Another reason it shouldn't be posted as an answer actually!

12:51 Nov 3, 2014 

Astrid is right about meaning =when he awakes he is conscious/aware of his environment but the English needs to be proofed/edited by a native. This is badly-written English: "Lying to all appearance, still asleep. He's really engaged for a struggle for movement, fraught with acute mental distress..." and I assume it's a direct translation. Astrid's is an improvement ...

10:08 Nov 3, 2014 

This is kind of you.

09:19 Nov 3, 2014 

... because I somehow doubted that this phrase will be searched for again. Maybe I'm wrong though.
I just wanted to quickly help you out :).

09:16 Nov 3, 2014 

This is a pretty good explanation to me!
I wonder why you did not post it as an answer :)

09:10 Nov 3, 2014 

...becomes aware of his surroundings, but cannot move.
He appears to be still sleeping, desperately wants to move, but cannot, as if he is under a spell, which stresses him. If he could move, this spell would be gone.

That's the meaning more or less in simpler words. Hope it helps.