Figure 2. Relationships of cerebral blood flow, cortical tissue P_O2, and ECoG state.

Recording of 100 min in the 135 ± 1 days gestation sheep fetus, illustrating relationships of LD-CBF and cortical t (Torr) to the ECoG state (μV) and ECOG frequency (Hz) (same fetus as Fig. 1). Noteworthy are the temporal relationships among the onset of LVHF ECoG activity with a decline in cortical t, and increase in LD-CBF. Arrows indicate change in ECoG state.