Asleep
You are sleeping and helpless. While asleep, you take a -10 penalty to Perception checks to notice anything. If you succeed at a Perception check to notice something despite the penalty, you automatically awaken. You are also awoken if you are slapped or wounded. An ally can wake you as a standard action.
Source
Core Rulebook pg. 273
Dragonscript
Effect
bonus -10 to character.perception as misc;
