Memory impairment across the atypical AD syndromic spectrum

All atypical AD syndromes demonstrated poor encoding and storage loss, adding to the characterization of memory impairment in atypical "non-amnestic" AD. EOAD participants demonstrated faster storage loss compared to the other variants, potentially reflecting multidomain impairment. While PCA and lvPPA performed comparably on object memory, these groups were differentiated by location memory binding. Understanding the varied presentation of memory deficits in atypical syndromes can help inform accurate diagnosis and cognitive skills training to cope with neurodegenerative decline.