Figure 2.

Grand average eLFPs for the two-tone oddball paradigm. (A,B) eLFPs averaged over session-pairs recorded in14 rats, from frontal (A) and parietal (B) cortex, for oddball tones (red) and standard tones (blue) separately. (C,D) plot the grand average difference between the oddball and standard eLFPs at frontal (C) and parietal (D) electrodes, with the shaded region representing a 68% confidence interval based on the variability across sessions. In both brain regions, evoked responses tend to be larger in amplitude when the tone is presented as a rare oddball, as opposed to when the same tone is presented as a frequent standard.