Locomotor Sensory Organization Test: How Sensory Conflict Affects the Temporal Structure of Sway Variability During Gait

Annals of Biomedical Engineering
Jung Hung ChienNicholas Stergiou

Abstract

When maintaining postural stability temporally under increased sensory conflict, a more rigid response is used where the available degrees of freedom are essentially frozen. The current study investigated if such a strategy is also utilized during more dynamic situations of postural control as is the case with walking. This study attempted to answer this question by using the Locomotor Sensory Organization Test (LSOT). This apparatus incorporates SOT inspired perturbations of the visual and the somatosensory system. Ten healthy young adults performed the six conditions of the traditional SOT and the corresponding six conditions on the LSOT. The temporal structure of sway variability was evaluated from all conditions. The results showed that in the anterior posterior direction somatosensory input is crucial for postural control for both walking and standing; visual input also had an effect but was not as prominent as the somatosensory input. In the medial lateral direction and with respect to walking, visual input has a much larger effect than somatosensory input. This is possibly due to the added contributions by peripheral vision during walking; in standing such contributions may not be as significant for postural control. In ...Continue Reading

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Citations

Feb 3, 2016·Annals of Biomedical Engineering·Jung Hung ChienNicholas Stergiou
Jan 28, 2017·Scientific Reports·Jung Hung ChienNicholas Stergiou
Jun 18, 2017·Experimental Brain Research·Eva-Maj MalmströmFredrik Tjernström
Mar 9, 2021·Frontiers in Neuroscience·Courtney E ShellRonald J Triolo

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