Reference neuropathological staging data for tau (Braak 0-VI) and alpha-synuclein (Braak PD stages 1-6) pathology progression, derived from the original Braak et al. studies (2003 Neurobiology of Aging). Used as reference for PSP/CBD tau strain spreading patterns, selective neuronal vulnerability, and entorhinal cortex analyses. Accessed via the NeuroBioBank and individual study supplements.