Learning and memory-related brain activity dynamics are altered in systemic lupus erythematosus: a functional magnetic resonance imaging study

Irit Shapira-Lichter, Eli Vakil, Ira Litinsky, Noga Oren, Yifat Glikmann-Johnston, Dan Caspi, Talma Hendler, Daphna Paran

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27 Citations (Scopus)

Abstract

Background: Memory impairment is prevalent in systemic lupus erythematosus (SLE); however, the pathogenesis is unknown. Methods: We studied 12 patients with SLE without clinically overt neuropsychiatric manifestations and 11 matched healthy controls, aiming to characterize neural correlates of memory impairment, using structural and functional magnetic resonance imaging (MRI). The paradigm consisted of three encoding and free-recall cycles, allowing characterization of dynamics along consecutive retrieval attempts. Results: During learning, patients with SLE and healthy controls showed brain activity changes in two principal networks, the default mode network (DMN) and the task-positive network (TPN). Patients with SLE demonstrated significantly less deactivation in the DMN and greater activation in the TPN, reflecting greater recruitment of both networks. The anterior medial prefrontal cortex (amPFC) of the DMN emerged as the only region where brain activity dynamics were altered both over the learning process (p
Original languageEnglish
Pages (from-to)562 - 573
Number of pages12
JournalLupus
Volume22
Issue number6
DOIs
Publication statusPublished - 2013
Externally publishedYes

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