Figure 3.

Effect of learning on the facilitation of a second late component. (A) An example of individual evoked field potentials (traces are averages of 12 sweeps) collected in a trained rat in the different sites before (light grey line) and after (dark line) learning for the same intensity of stimulation of the olfactory bulb. Following learning, a second late component (LC2; mean latency: 150 msec) was observed in all the recorded sites. (B) LC2 occurrence was compared between control (n = 7) and trained (n = 11) animals after learning. (*) P < 0.01, (**) P < 0.005 (χ² comparisons): significant difference between trained and control animals in the corresponding recording site.