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Updated: Jan 9, 2026

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
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Identifying cognitive capabilities required for optimal surface extravehicular activity performance.

Steven R Anderson1, Mercedes N Jorge2, Suzanne T Bell3

  • 1KBR, Behavioral Health & Performance Laboratory, Biomedical Research and Environmental Sciences Division, Human Health and Performance Directorate, NASA Johnson Space Center, Houston, TX, USA. steven.anderson@nasa.gov.

NPJ Microgravity
|December 6, 2025
PubMed
Summary
This summary is machine-generated.

Astronauts need specific cognitive skills for spacewalks (extravehicular activity/EVA). This study identified these critical cognitive demands and risks, informing future space mission safety and EVA planning.

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Area of Science:

  • Human Factors and Cognitive Science
  • Aerospace Medicine
  • Astronaut Performance

Background:

  • Surface extravehicular activity (EVA) is highly cognitively demanding for astronauts.
  • Current data is insufficient to fully characterize cognitive requirements for optimal EVA performance.
  • Cognitive decrements pose a significant risk to crew safety during EVAs.

Purpose of the Study:

  • To characterize the cognitive demands of surface EVA tasks.
  • To identify risks associated with cognitive performance decrements during surface EVA.
  • To establish a foundation for improving astronaut cognitive assessment and EVA planning.

Main Methods:

  • Cognitive task analysis was performed.
  • 15 astronauts and subject matter experts participated.
  • Demands and risks of surface EVA cognitive performance were analyzed.

Main Results:

  • Specific cognitive capabilities required for future surface EVAs were identified.
  • The study provides a basis for targeted cognitive performance measurement.
  • Foundational data for EVA simulation design and technology development was gathered.

Conclusions:

  • Understanding astronaut cognitive capabilities is crucial for safe and effective surface EVAs.
  • This research supports the development of NASA standards and guidelines for exploration missions.
  • The findings will enhance EVA planning and technology development for future space exploration.