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Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
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Influences of Postural Control on Cognitive Control in Task Switching
Denise N Stephan1, Sandra Hensen1, Edina Fintor1
1Institute of Psychology, RWTH Aachen University, Aachen, Germany.
Frontiers in Psychology
|October 23, 2018
Summary
Standing increases cognitive load during task switching, impacting how the brain manages multiple tasks. This study shows postural demands affect cognitive control, particularly when juggling concurrent tasks.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Factors
Background:
- Task switching involves cognitive control to manage competing task rules.
- Postural control is essential for stability but requires cognitive resources.
- The interplay between postural demands and cognitive control in complex tasks is not fully understood.
Purpose of the Study:
- To investigate how postural control demands affect cognitive control during auditory-manual task switching.
- To determine if standing, compared to sitting, alters switch costs, mixing costs, and congruency effects.
- To examine the influence of postural demands on task preparation processes.
Main Methods:
- An auditory cued task-switching paradigm was used with participants either sitting or standing.
- Switch costs, mixing costs, and the between-task congruency effect were measured.
- Experiment 1 manipulated cue-based task preparation to assess its interaction with postural demands.
Main Results:
- Standard task-switching effects (switch costs, mixing costs, congruency effects) were replicated in both sitting and standing conditions.
- Preparation reduced these costs in Experiment 1.
- A significant increase in the congruency effect was observed when standing compared to sitting.
Conclusions:
- Postural control demands selectively impact cognitive control during task switching, specifically increasing the congruency effect when standing.
- These findings suggest that increased postural demands may shift cognitive control towards less selective attention, allowing more parallel processing.
- This highlights the importance of considering physical demands when examining cognitive processes in dual-task scenarios.
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