Abstract:Background: Primary progressive aphasia (PPA) is a debilitating neurodegenerative disease that primarily impairs language function. It is comprised of three subtypes with varied clinical presentation and cortical atrophy patterns: logopenic variant (lvPPA), non-fluent variant (nfvPPA), and semantic variant (svPPA). No prior work has examined differences in brain chemistry between the PPA subtypes, or associations of brain chemistry with symptom severity.
Methods: We collected magnetic resonance spectroscopy … Show more
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