Percent freezing inflammatory pain rats on the 5 freezing variables. Top two panels represent post-weaning in the undisturbed (N=9M, 9F), vehicle (N=8M, 9F), and inflammation (N=8M, 8F) groups. Adolescent rats are represented in the middle two panels in the undisturbed (N=10M, 8F), vehicle (N=8M, 8F), and inflammation (N=6M, 8F) groups. Adult rats are depicted on the bottom two panels in the undisturbed (N=10M, 9F), vehicle (N=9M 8F), and inflammation (N=7M, 9F) groups. Any effect of the inflammatory pain is likely obscured by a ceiling effect, particularly with auditory freezing (AVG tone variable).