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    Procedural and declarative memory task performance, and the memory consolidation function of sleep, in recent and abstinent ecstasy/MDMA users

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    Authors
    Blagrove, Mark
    Seddon, Jennifer L.
    George, Sophie
    Parrott, Andrew C.
    Stickgold, Robert
    Walker, Matthew P.
    Jones, Katy A.
    Morgan, Michael J.
    Issue Date
    2010-07-08
    Subjects
    addiction
    ecstasy/MDMA
    memory
    
    Metadata
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    Abstract
    Ecstasy/MDMA use has been associated with various memory deficits. This study assessed declarative and procedural memory in ecstasy/MDMA users. Participants were tested in two sessions, 24 h apart, so that the memory consolidation function of sleep on both types of memory could also be assessed. Groups were: drug-naive controls (n = 24); recent ecstasy/MDMA users, who had taken ecstasy/MDMA 2-3 days before the first testing session (n = 25), and abstinent users, who had not taken ecstasy/MDMA for at least 8 days before testing (n = 17). Procedural memory did not differ between groups, but greater lifetime consumption of ecstasy was associated with poorer procedural memory. Recent ecstasy/MDMA users who had taken other drugs (mainly cannabis) 48-24 h before testing exhibited poorer declarative memory than controls, but recent users who had not taken other drugs in this 48-24-h period did not differ from controls. Greater lifetime consumption of ecstasy, and of cocaine, were associated with greater deficits in declarative memory. These results suggest that procedural, as well as declarative, memory deficits are associated with the extent of past ecstasy use. However, ecstasy/MDMA did not affect the memory consolidation function of sleep for either the declarative or the procedural memory task.
    Citation
    Blagrove M, Seddon J, George S, Parrott AC, Stickgold R, Walker MP, Jones KA, Morgan MJ (2011) 'Procedural and declarative memory task performance, and the memory consolidation function of sleep, in recent and abstinent ecstasy/MDMA users', Journal of Psychopharmacology, 25 (4), pp.465-477.
    Publisher
    SAGE
    Journal
    Journal of Psychopharmacology
    URI
    http://hdl.handle.net/10547/623223
    DOI
    10.1177/0269881110372545
    PubMed ID
    20615932
    PubMed Central ID
    PMC3604193
    Additional Links
    https://journals.sagepub.com/doi/full/10.1177/0269881110372545
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3604193/
    Type
    Article
    Language
    en
    ISSN
    0269-8811
    ae974a485f413a2113503eed53cd6c53
    10.1177/0269881110372545
    Scopus Count
    Collections
    Psychology

    entitlement

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