Fig. 6

Regional distribution of OEF in the brain as compared with previous reports [11, 16, 37]. The values of the cuneus and lateral side of the occipital cortex are averaged as the occipital cortex. The values of the base and convexity side of the frontal cortex are averaged as the frontal cortex. The values in the brainstem and the mesial temporal in Henriksen’s report are plotted as the pons and parahippocampal gyrus, respectively [16]