The time course of neurolinguistic and neuropsychological symptoms in three cases of logopenic primary progressive aphasia

► The study provides a novel longitudinal account of the progress of fluent PPA. ► Deteriorations not only in language but also attention and praxis are reported. ► Exemplary data for the development of a single PPA case over 46 months are given. ► One PPA patient showed a syndrome change from fluent to non-fluent PPA.