P3b versus P3a: an event-related potential investigation of the glucose facilitation effect

Journal of Psychopharmacology
L M RibyV P Gunn

Abstract

The ingestion of a glucose containing drink has been shown to improve performance on a variety of cognitive tasks. There is debate, however, as to whether glucose especially benefits hippocampal memory functioning or whether it has a more global effect on attentional systems. The present study used event related potential methodology (ERPs) to investigate further glucose-mediated cognitive processes. Each participant acted as his/her own control in a repeated measures design, receiving one of two possible treatments (25 g glucose vs. placebo) in a counterbalanced order. After a two hour fasting period participants completed a visual three-stimulus oddball task. This paradigm involves an individual detecting an infrequent target stimulus randomly embedded in a train of repetitive background or standard stimuli. Detection of the target results in a large P3b ERP component (memory updating effect). The infrequent presentation of a novel and irrelevant stimulus, randomly interspersed with the target and standard stimuli, generates a P3a response (orientation of attention effect). These components were used as markers to establish whether the glucose enhancement effect was restricted to the neuro-cognitive processes related to memor...Continue Reading

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Citations

Aug 22, 2012·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·René J HusterChristoph S Herrmann
Nov 19, 2015·Psychopharmacology·Brian Stollery, Leonie Christian
Jun 4, 2011·Nutrition Research·Leigh M RibyJennifer Murray
Nov 8, 2014·Journal of the International Society of Sports Nutrition·Jason Kw LeeYvonne Yw Yeo
Apr 22, 2015·Psychopharmacology·L H W BirnieL M Riby
Aug 2, 2012·Experimental Psychology·Leigh M Riby
Dec 21, 2014·Psychopharmacology·Brian Stollery, Leonie Christian
Oct 5, 2010·Neuroscience and Biobehavioral Reviews·Michael A SmithJonathan K Foster
Aug 20, 2014·Frontiers in Behavioral Neuroscience·Chia-Liang TsaiFeng-Ying Chou
Feb 20, 2015·Journal of Psychopharmacology·Karen R Brandt
Aug 15, 2017·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Nicola JonesMichael A Smith
Aug 21, 2008·The British Journal of Nutrition·Eveline A de Bruin, Mary B Gilsenan
Apr 2, 2008·The British Journal of Nutrition·Leigh M RibyCheryl Graham

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