Figure 1. Mean (±SEM) absolute water and sucrose intake (A) and mean sucrose preference (B) in paired and isolated prairie voles after 50 days of social isolation. *p < .05 versus respective paired value.
Figure 2. (±SEM) number of aggressive episodes during the resident-intruder test (A) and number of agitated behaviors after the resident-intruder test (B) in paired and isolated groups. Note the scale differences in A and B. *p < .05 versus paired value.
Figure 3. Mean (±SEM) circulating levels of oxytocin (A), arginine vasopressin (B), ACTH (C), and corticosterone (D) in paired and isolated prairie voles at 10 minutes after a 5-minute resident-intruder test. Note the scale differences among the four panels. *p < .05 versus paired value.
Figure 4. Brain sections (40 µm) showing oxytocin- (A and B) and CRF-immunoreactivity (C and D) in representative paired (A and C) and isolated (B and D) prairie voles in the hypothalamic PVN. Pictures are shown at 100x magnification. Scale bars = 100 µm. Stained fibers were excluded from analysis.
Figure 5. Mean (±SEM) number of oxytocin- (A) and CRF-immunoreactive (B) cells in the hypothalamic PVN in paired and isolated prairie voles. Note the scale differences in A and B. *p < .05 versus paired value. Stained fibers were excluded from analysis.
