# Factors contributing to the adaptation aftereffects of facial expression **Keywords:** constructed from either the same or opposing expressions. While hybrid faces made with **Opening (not a real abstract):** Factors contributing to the adaptation aftereffects of facial expression Andrea Butler a , Ipek Oruc b,c , Christopher J. Fox b,c,d , Jason J.S. Barton b,c,⁎ a **Authors:** [[Butler et al]]