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Sandra I. Sünram-Lea
Lancaster University
40Publications
15H-index
676Citations
Publications 40
Newest
Published on Nov 1, 2017
Sandra I. Sünram-Lea15
Estimated H-index: 15
,
Lauren Owen13
Estimated H-index: 13
The brain has a high metabolic rate and its metabolism is almost entirely restricted to oxidative utilisation of glucose. These factors emphasise the extreme dependence of neural tissue on a stable and adequate supply of glucose. Whereas initially it was thought that only glucose deprivation (i.e. under hypoglycaemic conditions) can affect brain function, it has become apparent that low-level fluctuations in central availability can affect neural and consequently, cognitive performance. In the p...
Published on May 1, 2017in Psychophysiology3.38
Claire L. Kelly2
Estimated H-index: 2
(Lancaster University),
Trevor J. Crawford32
Estimated H-index: 32
(Lancaster University)
+ 2 AuthorsSandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
Self-control is important for everyday life and involves behavioral regulation. Self-control requires effort, and when completing two successive self-control tasks, there is typically a temporary drop in performance in the second task. High self-reported motivation and being made self-aware somewhat counteract this effect-with the result that performance in the second task is enhanced. The current study explored the relationship between self-awareness and motivation on sequential self-control ta...
Published on Mar 31, 2015in PLOS ONE2.78
Claire L. Kelly2
Estimated H-index: 2
(Fylde College, Lancaster University),
Sandra I. Sünram-Lea15
Estimated H-index: 15
(Fylde College, Lancaster University),
Trevor J. Crawford32
Estimated H-index: 32
(Fylde College, Lancaster University)
Research shows that self-control is resource limited and there is a gradual weakening in consecutive self-control task performance akin to muscle fatigue. A body of evidence suggests that the resource is glucose and consuming glucose reduces this effect. This study examined the effect of glucose on performance in the antisaccade task - which requires self-control through generating a voluntary eye movement away from a target - following self-control exertion in the Stroop task. The effects of mo...
Published on Mar 1, 2015in Psychopharmacology3.42
Helen Macpherson13
Estimated H-index: 13
(Swinburne University of Technology),
Bernadette Roberstson1
Estimated H-index: 1
(Lancaster University)
+ 3 AuthorsAndrew Scholey55
Estimated H-index: 55
(Swinburne University of Technology)
Rationale Current research suggests that glucose facilitates performance on cognitive tasks which possess an episodic memory component and a relatively high level of cognitive demand. However, the extent to which this glucose facilitation effect is uniform across the lifespan is uncertain.
Sarita Jane Robinson9
Estimated H-index: 9
(UCLan: University of Central Lancashire),
John Leach9
Estimated H-index: 9
+ 1 AuthorsSandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
Background: During emergencies maladaptive behavior can reduce survival. This study compared the effects of a basic firefighter training course on 21 volunteers (with no firefighting experience) with age and gender-matched controls. Methods: Stress reactivity (salivary cortisol and anxiety) were monitored across the course: day 1 (classroom), day 2 (physical equipment training), and day 3 (simulated fire emergency). Cognitive performance (visual attention, declarative and working memory) conside...
Published on Aug 10, 2011in Nutrients4.17
Lauren Owen13
Estimated H-index: 13
(Swinburne University of Technology),
Sandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
Over the past four or five decades, there has been increasing interest in the neurochemical regulation of cognition. This field received considerable attention in the 1980s, with the identification of possible cognition enhancing agents or “smart drugs”. Even though many of the optimistic claims for some agents have proven premature, evidence suggests that several metabolic agents may prove to be effective in improving and preserving cognitive performance and may lead to better cognitive aging t...
Published on Aug 1, 2011in Journal of Psychopharmacology4.22
Sandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University),
Lauren Owen13
Estimated H-index: 13
(Swinburne University of Technology)
+ 1 AuthorsHenglong Hu4
Estimated H-index: 4
It has been suggested that the memory enhancing effect of glucose follows an inverted U-shaped curve, with 25 g resulting in optimal facilitation in healthy young adults. The aim of this study was to further investigate the dose dependency of the glucose facilitation effect in this population across different memory domains and to assess moderation by interindividual differences in glucose regulation and weight. Following a double-blind, repeated measures design, 30 participants were administere...
Published on Aug 1, 2010in Psychopharmacology3.42
Lauren Owen13
Estimated H-index: 13
,
Yvonne E. Finnegan11
Estimated H-index: 11
+ 2 AuthorsSandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
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.
Published on Jul 29, 2010in Behavioural Brain Research2.77
Karen R. Brandt13
Estimated H-index: 13
(University of Roehampton),
Sandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
+ 1 AuthorsEmma Jones6
Estimated H-index: 6
(Northumbria University)
Whilst previous research has shown that glucose administration can boost memory performance, research investigating the effects of glucose on memory for emotional material has produced mixed findings. Whereas some research has shown that glucose impairs memory for emotional material, other research has shown that glucose has no effect on emotional items. The aim of the present research was therefore to provide further investigation of the role of glucose on the recognition of words with emotiona...
Published on Dec 1, 2009in Appetite3.50
Andrew Scholey55
Estimated H-index: 55
(Swinburne University of Technology),
Sandra I. Sünram-Lea15
Estimated H-index: 15
(Lancaster University)
+ 2 AuthorsDavid O. Kennedy39
Estimated H-index: 39
(Northumbria University)
This double-blind, placebo-controlled study examined the influence of appetitive state on glucose enhancement of memory. Participants rated their mood, hunger and thirst, then consumed a 25 g glucose drink or a matched placebo 20 min prior to a verbal memory task. There was a double dissociation when the effects of thirst ratings and drink on subsequent memory performance were considered. Those who were initially less thirsty recalled significantly more words following glucose than placebo; thos...
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