Fear- and anxiety-related behaviors Hide aloneb; f,d Immobilized in a corner or nest box at a distance longer than one body length to another rat. Huddlingb; f,d Immobilized in a corner or in a nest box in close
Off-nest VEH 1.1 ± 0.5 1.6 ± 0.8 0.1 ± 0.1 2.1 ± 1.2 1.7 ± 1.5 0.9 ± 0.5 2.7 ± 2.0 CRFR1 ago 1.5 ± 0.7 11.8 ± 1.0**++ 7.8 ± 2.3** 9.7 ± 2.6** 8.8 ± 2.8** 7.8 ± 2.7** 7.8 ± 2.2 CRFR1 ant 1.3 ± ...