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. 2002 Mar;9(2):89–96. doi: 10.1101/lm.43002

Figure 2.

Figure 2

Conditioning sessions. Percentage of immobility behavior displayed by control (CTL, n = 10), paired (PA, n = 12), unpaired (UN, n = 12), and US exposure only (US, n = 8) mice during consecutive 30-sec time intervals as assessed by latency 1st BI (A) and the continuous (B) and time-sampling (C) methods of hand scoring. PA, UN, and US mice were exposed to the foot-shock US (2 sec, 0.7 mA) 148 sec after the session started (end of the 5th bin). Hand-scored data show that during the last 30-sec time interval (6th bin) PA, UN, and US mice spent more time freezing than the CTL group. *P < 0.05, **P < 0.005 versus PA, UN, and US groups at the same time point (Newman-Keuls post hoc test).