Fig. 1.

Neuropsychological and clinical signatures of tAD, bdAD, and bvFTD. Each point of the target shows a particular cognitive or clinical domain. The distance along the radial dimension indicates the level of impaired or decline function. Loss of function is indicated by a major distance from the central point, which corresponds to the cognitive/clinical domain in reference. The neuropsychological profile of a particular disease is evident in the pattern of decline of cognitive and clinical features: the differential loss of function across cognitive domains.