Enhancing astronaut performance using sensorimotor adaptability training.

Area of Science:

• Human physiology
• Neuroscience
• Space medicine

Background:

• Astronauts face significant balance and gait disturbances upon returning to Earth due to altered sensory input.
• The human brain's plasticity allows for adaptation to new environments, a crucial factor for space travel and return.
• Developing effective sensorimotor countermeasures is vital for astronaut health and mission success.

Purpose of the Study:

• To train astronauts to rapidly adapt to novel sensory situations and challenges in balance and locomotion.
• To enhance astronauts' ability to
• learn to learn
• new gravitational environments.

Main Methods:

• A novel training system was developed, combining treadmill walking with a motion base to create unstable support surfaces.
• Variable sensory challenges were introduced using a virtual visual scene presenting discordant visual information during treadmill walking.
• Subjects practiced resolving conflicting sensory information to improve adaptive strategies.

Main Results:

• The training system effectively challenges gait stability and imposes sensory variation.
• Participants improved their ability to rapidly adapt to novel and conflicting sensory information.
• The program demonstrated potential for enhancing sensorimotor adaptation skills.

Conclusions:

• This training approach can significantly improve astronauts' ability to cope with balance and locomotor challenges in different gravitational environments.
• The findings will inform the design of next-generation sensorimotor countermeasures for space exploration.
• Enhanced sensorimotor adaptation is key to mitigating the physiological effects of spaceflight.