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. Author manuscript; available in PMC: 2008 Jan 25.
Published in final edited form as: Behav Brain Res. 2006 Nov 13;176(2):210–215. doi: 10.1016/j.bbr.2006.10.001

Figure 1.

Figure 1

Pavlovian fear conditioning and fear extinction across adolescent development. Early adolescent (4-week old) mice showed significantly more freezing during conditioning than adults (8-week old), and both early adolescent and peri-adolescent (6-week old) mice generally froze more during extinction learning than adults (A). Age-groups showed an equivalent decrease in freezing during extinction training (B). n=12/age-group. *P<.05. Data in Figures 1–4 are Means ±SEM.