Anatomic, clinical, and neuropsychological correlates of spelling errors in primary progressive aphasia

► Different patterns of agraphia are seen in Primary Progressive Aphasia. ► Lexical agraphia is seen in semantic variant PPA. ► Phonologic agraphia is seen in agrammatic variant PPA. ► Lexical agraphia correlates with extrasylvian temporal atrophy. ► Phonologic agraphia correlates with perisylvian temporal atrophy.