Evidence of visual hemineglect in an archeological specimen?

Fetal PCA, when present, originates from the internal carotid artery (ICA) and it is supplied by the carotid system rather than the vertebro-basillary system. Fetal type posterior (FTP) circulation variation has been reported in 3-36% in the literature. Three types have been described: Transitional configuration, partial FTP and full FTP. In FTP, leptomeningeal collaterals cannot provide the PCA-MCA connection, as the tentorium prevents the connection of cerebellar vessels with the PCA.[2]