Dave said:you would have to call the defense. If you are *actually asleep and fail to call your defense because of it, the spell shield does not take effect; but if you are just IG asleep and call the defense, it works just fine.
Cymryc said:According to page 57 under spell defenses, middle column, first paragraph
spell defenses activate if the victim is sleeping normally, they will wake and be aware that the spell defense is gone