Fig. 1
From: Classification of the primary progressive aphasias: principles and review of progress since 2011
The basic scheme for PPA classification according to the 2011 recommendations. For a more detailed description of positive and negative criteria for assignment to one of the three subtypes we refer to [1]. Blue, most critical language dimension; gray, some examples of frequently used conventional neuropsychological tests; green, subtype. PALPA Psycholinguistic Assessment of Language Processing in Aphasia