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Updated: Jul 27, 2026
12:29
Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
Published on: May 23, 2011
19.5K
Effect of artificial gravity on neurocognitive performance during head-down tilt bedrest
Borbála Tölgyesi1,2, Anna Altbäcker3, Irén Barkaszi1
1Institute of Cognitive Neuroscience and Psychology, HUN-REN Research Centre for Natural Sciences, Budapest, Hungary.
NPJ Microgravity
|June 5, 2024
Summary
Artificial Gravity (AG) did not impair cognitive function during 60 days of head-down tilt bedrest (HDTBR). Both intermittent and continuous AG showed no negative effects on attention and working memory tasks.
Area of Science:
- Spaceflight research
- Human physiology
- Cognitive neuroscience
Background:
- Head-down tilt bedrest (HDTBR) simulates microgravity effects.
- Artificial Gravity (AG) is a potential countermeasure for spaceflight-induced physiological deconditioning.
- Cognitive function is crucial for astronaut performance during long-duration missions.
Purpose of the Study:
- To assess the effects of intermittent and continuous Artificial Gravity (AG) on cognitive performance.
- To evaluate cognitive function during a 60-day head-down tilt bedrest (HDTBR) protocol.
- To investigate potential acute and chronic impacts of AG on attention and working memory.
Main Methods:
- Randomized controlled trial with three groups: intermittent AG, continuous AG, and HDTBR control.
- Cognitive tasks administered in visual and auditory modalities (simple and complex).
- Electrophysiological measures (brain potentials) recorded to assess neural correlates of attention and working memory.
Main Results:
- Faster reaction times and improved accuracy on complex tasks during HDTBR compared to baseline.
- Diminished practice effects on cognitive tasks in all HDTBR groups versus an ambulatory control.
- Modality-specific changes in brain potentials: P3a decreased in auditory, P3b decreased in visual modality.
Conclusions:
- No evidence of acute or chronic cognitive impairments due to Artificial Gravity during HDTBR.
- Artificial Gravity appears safe for cognitive function in simulated spaceflight conditions.
- Cognitive performance may adapt or be influenced by task complexity and modality during prolonged bedrest.
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