A pioneering study led by the University of Michigan, in collaboration with the University of Colorado Boulder's Bioastronautics Lab and NASA's Neuroscience Lab, introduces an innovative augmented reality (AR) assessment aimed at evaluating astronauts' adjustment to gravity transitions experienced during space travel.
Published in Aerospace Medicine and Human Performance, the research focuses on detecting sensorimotor impairments akin to those observed in astronauts post-spaceflight. By employing a multidirectional tapping task administered through AR glasses, researchers aim to determine astronauts' readiness to undertake tasks necessitating full coordination, such as piloting vehicles or operating complex systems, upon transitioning from microgravity environments to destinations like the moon or Mars.
Traditionally, post-flight assessments have relied on intensive evaluations conducted upon crew members' return to Earth. However, with future missions extending beyond Earth's orbit, there arises a need for compact, space-conscious assessment tools to gauge astronauts' recovery within the confined spaces of their spacecraft, devoid of expert assistance.
Professor Leia Stirling underscores the importance of such innovations, stating, "Space is really a type of telehealth where we need to make decisions without the experts present. Tools to support that decision-making can make future space missions more efficient and help decrease risks."
The AR-based hand-eye coordination task offers a lightweight solution, facilitating real-time tracking and analysis of astronauts' motor functions and performance metrics. This approach not only streamlines assessments but also enables personalized rehabilitation programs tailored to individual needs or mission requirements.
Hannah Weiss, co-author and doctoral graduate from the University of Michigan, emphasizes the potential of AR-based evaluations in offering targeted feedback and developing tailored countermeasures to address sensorimotor challenges faced by astronauts.
The study's methodology involved inducing vestibular disruption in participants to simulate post-flight vestibular impairment. Results revealed a decrease in tapping speed and accuracy, highlighting the impact of vestibular disruption on task performance.
Moving forward, the research team aims to expand their assessments to encompass balance and mobility tasks, further enhancing their understanding of astronauts' adaptation to local gravity. Moreover, efforts are underway to establish readiness thresholds to guide decision-making processes.
Aaron Allred, the lead author and doctoral student of Bioastronautics at the University of Colorado Boulder, emphasizes the broader implications of their research, stating, "Sensorimotor challenges pose major risks to crew members, and we are working towards using electrical vestibular stimulation to train astronauts to operate in these impaired states prior to spaceflight to improve their outcomes."
Beyond space exploration, the insights gleaned from these assessments hold potential for informing telehealth patient care, particularly for individuals experiencing vestibular loss due to aging, thus highlighting the broader impact of such innovative research endeavors.
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