Fig. 2.

fMRI results. Brain regions activated in relation to slow oscillation: common effects of both high-amplitude slow waves and delta waves. (Middle) Significant responses associated with both slow waves and delta waves. Functional results are displayed on an individual structural image (display at P < .001, uncorrected), at different levels of the x, y, and z axes, as indicated for each section. (Left and Right) Time course (in seconds) of fitted response amplitudes (in arbitrary units) during slow waves or delta waves in the corresponding circled brain area. All responses consist of regional increases in brain activity. (A) Pontine tegmentum. (B) Cerebellum. (C) Right parahippocampal gyrus. (D) Inferior frontal gyrus. (E) Precuneus. (F) Posterior cingulate cortex.