Table 2 Brain regions of different Braak stages used in our study (GM: grey matter)

I–II

• Hippocampus and Entorhinal cortex

III–IV

• Parahippocampal gyrus, Fusiform gyrus, Occipital fusiform gyrus, Lingual gyrus, Amygdala, Inferior temporal gyrus, Middle temporal gyrus, Temporal pole, Cingulate gyrus, and Insula

V–VI

• Inferior frontal GM, Lateral frontal GM, Medial frontal GM, Opercular frontal GM, Parietal GM, Supratemporal GM, Superior temporal gyrus, Lateral occipital GM, Cuneus, and Calcarine cortex