Fig. 8.

nLOT-lesioned rats have similar levels of contextual and cued fear conditioned learning and memory. a nLOT- and sham-lesioned rats did not show any difference compared to control rats in the percentage of freezing time for each of the 3-min periods of the acquisition session, during the context retention test, and during each of the 3-min periods of the tone retention test, which was performed in a novel context. No tone or footshock was delivered during the first 3-min periods of the acquisition session and of the tone retention test. The histogram b shows that the mean cumulative time that nLOT-lesioned rats spent investigating 1% and 10% acetic acid was significantly inferior to that spent by sham-lesioned and control rats. Data are presented as the mean + SEM. *p < 0.001 compared to min 1–3 of the acquisition test of the respective group; ^# p < 0.001 compared to the no tone period of the respective group; ⁺ p < 0.001 compared to controls, ^δ p < 0.001 compared to sham-lesioned rats