EEG power during slow wave sleep.

<p>(A) pre and (B) post exposure to chronic mild stress. FF = frontal-frontal derivation, FP = frontal-parietal derivation. Open triangles indicate brief maternally separated rats and filled triangles long maternally separated rats. The curves connect the mean values and SEM for each 1 Hz bin (from 0.5 to 19.4 Hz) and beta (19.5–35.4 Hz) and gamma band (35–60 Hz). Delta (δ) and theta (θ) bands were used for statistical analyses. FF: delta: group and recording day effect (F’s_(1,11) ≥4.8, <i>p≤</i>0.05); theta: group and recording day effect (F’s_(1,10)≥5.4, <i>p</i><0.05); FP: delta and theta: recording day effect (F’s_(1,12)≥17.4, <i>p<</i>0.01).* p<0.05.