Table 2.

Duration of aggressive and nonaggressive acts and postures during microdialysis

Nucleus accumbens (n = 18)Prefrontal cortex (n = 15)
BeforeConfrontationAfterBeforeConfrontationAfter
Rearing14.4 (7.0)31.2 (5.9)6.2 (3.9)0.8 (0.6)35.3 (7.6)3.1 (1.6)
Walking6.3 (2.4)53.9 (3.9)6.3 (2.5)1.2 (1.1)47.7 (4.4)5.2 (1.8)
Self-grooming29.1 (13.0)55.6 (17.1)34.5 (14.6)25.3 (14.1)43.0 (9.6)8.4 (3.7)
Digging3.7 (1.8)0.6 (0.5)0.4 (0.2)0.4 (0.4)0.6 (0.3)0.7 (0.6)
Inactive sitting146.3 (31.4)130.2 (19.9)120.0 (29.7)186.8 (33.9)235.4 (26.0)191.4 (26.8)
Lying68.5 (25.1)7.1 (7.1)106.0 (33.4)53.1 (29.3)2.5 (1.9)22.7 (16.9)
Nasal contactn/a72.1 (8.4)n/an/a66.6 (8.2)n/a
Allogroomingn/a28.2 (5.5)n/an/a24.6 (4.2)n/a
Anogenital contactn/a37.5 (5.1)n/an/a19.4 (3.4)n/a
Aggressive posturen/a57.8 (18.3)n/an/a26.9 (7.0)n/a
Sideways threatn/a63.1 (15.7)n/an/a53.4 (13.7)n/a
Chasingn/a1.4 (0.8)n/an/a0.4 (0.2)n/a
  • Behavior was recorded on video during baseline sampling (Before), during the confrontation, and 1 hr after the confrontation (After), and analyzed afterward using a computerized scoring system. All data are durations in seconds and are expressed as averages ± SEM. For frequency of attacks, see Table 1. n/a, Not applicable.