Pattern Shifting is the condition in which a chameleon or shape-shifter changes their brain pattern.
Overview
Shape-shifters
When a shape-shifter changes form, their brain pattern also changes in reaction.
Chameleons
A chameleon's pattern generally changes when they shift into a specific species, such as human or werewolf. By changing their pattern, they can easily blend in with other supernatural kinds without detection. When a chameleon's powers start to manifest, their brain pattern can occasionally shift without their notice.
History
Kylie's brain pattern starts changing in Awake at Dawn. Her shifting speed picks up in the middle of Taken at Dusk. Perry tells her about a shape-shifter's brain pattern changing when they shift into other forms.