Higher Dependency on Visual Inputs During Posture Control: Another Long-Term Effect of mTBIs

Autor: Danna-dos-Santos A, Degani Am
Rok vydání: 2021
Předmět:
DOI: 10.21203/rs.3.rs-652873/v1
Popis: This study investigated the hypothesis that individuals living with long-term effects of mild traumatic brain injury (mTBI) develop increased dependency on their visual inputs to control their vertical posture. To test this hypothesis we quantified visuo-postural dependency indices (VPDIs) calculated independently for multiple postural behavioral markers extracted from the body’s center of pressure coordinates signals recorded during the execution of a quiet bipedal stance. One hundred and twenty-nine volunteers participated in this study. An mTBI (n = 50) and a neurotypical Control group were formed (n = 79). VPDIs were calculated as the normalized pair-wise subtraction of recordings obtained under Vision and No-Vision experimental conditions. Consistent with our hypothesis the results of this study show that balance behavior of mTBI participants deteriorate more abruptly in the absence of visual inputs when compared to neurotypical controls. These impairments may increase the likelihood of recurrent traumas when fast reactions are needed in daily activities, sports practice, or military operations. Additionally, the methodology used in this study showed to be potentially useful to aid future investigations of neural circuitry impaired by mTBI and provide indices of recovery in future clinical trials testing mTBI-related clinical interventions.
Databáze: OpenAIRE