Taxonomic Interference Associated with Phonemic Paraphasias in Agrammatic Primary Progressive Aphasia.

ABSTRACT: Phonemic paraphasias are thought to reflect phonological (post-semantic) deficits in language production. Here we present evidence that phonemic paraphasias in non-semantic primary progressive aphasia (PPA) may be associated with taxonomic interference. Agrammatic and logopenic PPA patients and control participants performed a word-to-picture visual search task where they matched a stimulus noun to 1 of 16 object pictures as their eye movements were recorded. Participants were subsequently asked to name the same items. We measured taxonomic interference (ratio of time spent viewing related vs. unrelated foils) during the search task for each item. Target items that elicited a phonemic paraphasia during object naming elicited increased taxonomic interference during the search task in agramm

SUBMITTER: Nelson MJ 

PROVIDER: S-EPMC7174997 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature