Lancaster EPrints

Glucose effects on long-term memory performance : duration and domain specificity.

Owen, Laura and Finnegan, Yvonne and Hu, Henglong and Scholey, Andrew B. and Sünram-Lea, Sandra I. (2010) Glucose effects on long-term memory performance : duration and domain specificity. Psychopharmacology, 211 (2). pp. 131-140.

[img]
Preview
PDF (Owen_et_al._2010_Psychopharmacology.pdf)
Download (314Kb) | Preview

    Abstract

    Rational; Previous research has suggested that long term- verbal declarative memory is particularly sensitive to enhancement by glucose loading, however investigation of glucose effects on certain memory domains has hitherto been neglected. Therefore domain specificity of glucose effects merits further elucidation. Objectives; The aim of the present research was to provide a more comprehensive investigation of the possible effects of glucose administration on different aspects of memory by i) contrasting the effect of glucose administration on different memory domains (implicit/ explicit memory; verbal/ non-verbal memory, recognition/ familiarity processes), ii) investigating whether potential effects on memory domains differ depending on the dose of glucose administered (25g versus 60g), iii) exploring the duration of the glucose facilitation effect (assessment of memory performance 35 min and 1 week after encoding). Methods; a double blind, between- subjects design was used to test the effects of administration of 25 and 60g glucose on memory performance. Results; Implicit memory was improved following administration of 60g of glucose. Glucose supplementation failed to improve face recognition performance but significantly improved performance of word recall and recognition following administration of 60g of glucose. However, effects were not maintained one-week following encoding. Conclusions; Improved implicit memory performance following glucose administration has not been reported before. Furthermore the current data tentatively suggest that level of processing may determine the required glucose dosage to demonstrate memory improvement and that higher dosages may be able to exert effects on memory pertaining to both hippocampal and non-hippocampal brain regions.

    Item Type: Article
    Journal or Publication Title: Psychopharmacology
    Uncontrolled Keywords: Glucose - Implicit memory - Face recognition - Long-term memory
    Subjects: B Philosophy. Psychology. Religion > BF Psychology
    Departments: UNSPECIFIED
    ID Code: 34663
    Deposited By: Dr Sandra I. Sunram-Lea
    Deposited On: 01 Dec 2010 10:18
    Refereed?: Yes
    Published?: Published
    Last Modified: 23 Jul 2014 14:52
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/34663

    Actions (login required)

    View Item