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Effects of four 5-min umbilical cord occlusions on ECoG spectral frequencies. Changes in median frequency (A), spectral edge frequency (SEF, B) and frequency bands (Delta, C; Theta, D; Alpha, E and Beta1, F)relative to pre-occlusion values (Day -1; dotted line) in control (□, n=5) and pre-hypoxic (■, n=6) fetuses. * p<0.05 vs Day -1; # p<0.05 vs control.
