Development of a biomechanical motion sensorimotor platform for enhanced locomotion under microgravity conditions

TL;DR

This paper proposes a biomechanical sensorimotor platform combining accelerometers and EMG signals to improve human locomotion in microgravity, aiming to enhance space repair, construction, and recreational activities.

Contribution

It introduces a novel combined accelerometer-EMG sensorimotor system integrated into loading suits for microgravity, addressing limitations of existing prosthetic and sensor systems.

Findings

Conceptual framework for sensorimotor system in microgravity

Potential applications in space repair and construction

Foundation for future proof-of-concept experiments

Abstract

For humans accustomed to 1-G environments on Earth, microgravity conditions in orbit and on celestial bodies with lower gravitational field, such as the Moon, can be physiologically compromising. Of these, motor and fine-dexterity tasks involving the extremities, particularly in locomotion, grasp and release, are influenced becoming delayed and placing greater force demands. The authors hereby propose incorporating this same technological innovation into loading suits designed for use in orbit or celestial environment. Current prosthetic systems use electromyography (EMG)-based techniques for creating functional sensorimotor platforms. This model sustains a sensorimotor platform for prosthesis users. However, several limitations in practical use and signal detection have been identified in these systems. Accelerometer-based sensorimotor systems have been suggested to overcome these limitations but only proof-of-concept has been demonstrated. Our group previously suggested the combined application of prosthetic accelerometers in loading suits and EMGs for input signal detection, quantification, and predictive output modelling necessary for improved motion adjustments under microgravity conditions. It is anticipated this technology can enhance tasks such as repairs or construction or perhaps in recreational design when considering commercial and private human access to space. The incorporation of a prosthetic biomechanical sensorimotor system in loading suits to enhance locomotion under microgravity conditions are conceivable; however, demonstration of a proof-of-concept is required before implementation.