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  • Title: Memory interference in multiple sclerosis.
    Author: Griffiths SY, Yamamoto A, Boudreau VG, Ross LK, Kozora E, Thornton AE.
    Journal: J Int Neuropsychol Soc; 2005 Oct; 11(6):737-46. PubMed ID: 16248909.
    Abstract:
    To explore verbal memory impairments associated with multiple sclerosis (MS), we compared proactive and retroactive interference effects on the California Verbal Learning Test (CVLT; Delis et al., 1987) in a sample of 83 community-residing individuals with MS and 80 healthy participants. Individuals with MS demonstrated normal accumulation of proactive interference (PI), but attenuated release from PI relative to healthy individuals. Furthermore, accumulation of retroactive interference (RI) at short-delay free recall (SDFR) was intensified for those with MS as compared to healthy participants. Interestingly, accumulation of RI predicted long-term memory (LTM) only for participants with MS. These findings suggest that individuals with MS may experience particular difficulty when required to use semantic properties of information flexibly to facilitate verbal LTM.
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