Fig. 3.
D-Sap induced ITC lesions cause an extinction deficit. (a) Percent time freezing (y-axis; mean ± s.e.m.) in ITC-lesioned rats (red; n=8) vs. control rats that received U-Sap infusions at the same site (empty black circles; n=11) or D-Sap infusions in the BLA or CEA (n=15; filled black circles). Data obtained in the D-Sap BLA and CEA animals was pooled because the behavior of these two rat subsets was statistically undistinguishable (ANOVA F(1,108)=0.847, p=0.38). (b) Relationship between number of ITC (bottom) or CEA (top) neurons (y-axis) vs. percent time freezing (x-axis) during extinction testing session (average of first three trials).