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Decision making after 50 days of simulated weightlessness

Lipnicki, Darren, Gunga, Hanns-Christian, Belavy, Daniel L. and Felsenberg, Dieter 2009, Decision making after 50 days of simulated weightlessness, Brain research, vol. 1280, pp. 84-89, doi: 10.1016/j.brainres.2009.05.022.

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Title Decision making after 50 days of simulated weightlessness
Author(s) Lipnicki, Darren
Gunga, Hanns-Christian
Belavy, Daniel L.ORCID iD for Belavy, Daniel L. orcid.org/0000-0002-9307-832X
Felsenberg, Dieter
Journal name Brain research
Volume number 1280
Start page 84
End page 89
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2009-07-14
ISSN 1872-6240
Keyword(s) Science & Technology
Life Sciences & Biomedicine
Neurosciences
Neurosciences & Neurology
Cognition
Executive function
Iowa Gambling Task
Physical activity
Spaceflight
HEART-RATE-VARIABILITY
DOWN BED REST
COGNITIVE FUNCTION
PREFRONTAL CORTEX
EXECUTIVE FUNCTIONS
WORKING-MEMORY
PERFORMANCE
AMBIGUITY
EXERCISE
Summary By restricting physical activity levels, the bed rest simulation of weightlessness could be associated with changes in prefrontal cortex functioning that manifest as cognitive decrements, particularly for executive cognitive functions. We aimed to determine if performance on an executive function task was indeed affected by bed rest. The Iowa Gambling Task, a card game measuring real-life decision making processes, was administered to 25 healthy males (aged 21-45 years) selected to undergo 60 days of 6 degrees head-down tilt bed rest for the 2nd Berlin BedRest Study (BBR2-2). Testing was conducted either 6 days before beginning bed rest (n=13) or on the 51st day of bed rest (n=12). The task performance scores of subjects tested before bed rest were not significantly different from those tested during bed rest. However, subjects tested during bed rest failed to adapt their card selection strategy as the Iowa Gambling Task progressed. This was unlike the subjects tested before bed rest, who switched between decks on consecutive card selections less frequently in latter stages of the task. An influence of prolonged bed rest on decision making could have implications for the planning of human spaceflights to Mars, or for any circumstance in which adequate physical activity levels are not achieved.
Language eng
DOI 10.1016/j.brainres.2009.05.022
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 920299 Health and Support Services not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2009, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071021

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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