Differences in sensory reweighting due to loss of visual and proprioceptive cues in postural stability support among sleep-deprived cadet pilots

Cheng, Shan; Ma, Jin; Sun, Jicheng; Wang, Jian; Xiao, Xiao; Wang, Yihan; Hu, Wendong

doi:10.1016/j.gaitpost.2018.04.037

Cited by 19 publications

(16 citation statements)

References 19 publications

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“…Likewise, the pilots participating in our experiment felt tired, both psychologically and physically; therefore, the BI-1 index changed significantly after the task, compared to before the task. This result was consistent with the results of previous studies related to changes in brain cognition which affected the postural stability [33, 37, 38]. In addition, in the present study we applied principal component analysis to obtain BI-1.…”

Section: Discussionsupporting

confidence: 92%

“…In a previous study, we modified an instrument that can evaluate the static upright balance function of participants under different conditions (TETRAX of Israel Sunlight Medical Ltd., Israel) by developing a new software based on their hardware and software [33] with indicators that target to sleep status, etc. The modified software calculation method mainly relies on principal component analysis and we found that there was a specific posture that brought the most dramatic change in the parameters of the static upright balance function during the task load, which followed a linear trend.…”

Section: Methodsmentioning

confidence: 99%

“…A repeated measures analysis was used to compare the changes in the time-domain and frequency-domain indicators. The static upright balance function were used to construct a static upright balance index (SUBI) using a principle component analysis [33].…”

Section: Methodsmentioning

confidence: 99%

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Assessment of the static upright balance index and brain blood oxygen levels as parameters to evaluate pilot workload

Sun

Cheng

et al. 2019

PLoS ONE

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Objective To investigate the potential for static upright balance function and brain-blood oxygen parameters to evaluate pilot workload. Methods Phase 1: The NASA Task Load Index (NASA-TLX) was used to compare the workloads of real flights with flight simulator simulated flight tasks in 15 pilots (Cohort 1). Phase 2: To determine the effects of workload, 50 cadets were divided equally into simulated flight task load (experimental) and control groups (Cohort 2). The experimental group underwent 2 h of simulated flight tasks, while the control group rested for 2 h. Their static upright balance function was evaluated using balance index-1 (BI-1), before and after the tasks, with balance system posturography equipment and cerebral blood oxygen parameters monitored with near infrared spectroscopy (NIRS) in real time. Sternberg dual-task and reaction time tests were performed in the experimental and control groups before and after the simulated flight tasks. Results (Phase1) There was a significant correlation between the workload caused by real flight and simulated flight tasks ( P <0.01), indicating that NASA-TLX scales were also a tool for measuring workloads of the stimulated flight tasks. (Phase 2) For the simulated flight task experiments, the NASA-TLX total scores were significantly different between the two groups ( P <0.001) and (pre-to-post) changes of the BI-1 index were greater in the experimental group than in controls ( P <0.001). The cerebral blood oxygen saturation levels (rsO 2 ) ( P <0.01) and ΔHb reductions ( P <0.05) were significantly higher in the experimental, compared to the control group, during the simulated flight task. In contrast to the control group the error rates ( P = 0.002) and accuracy ( P <0.001) changed significantly in the experimental group after the simulated flight tasks. Conclusions The simulated flight task model could simulate the real flight task load and static balance and NIRS were useful for evaluating pilots’ workload/fatigue.

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Section: Discussionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

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Assessment of the static upright balance index and brain blood oxygen levels as parameters to evaluate pilot workload

Sun

Cheng

et al. 2019

PLoS ONE

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“…Moreover, in such condition the central nervous system needs to cognitively involve both the control of both eye movements and postural sway. Because sleep deprivation or restriction impacts negatively postural control performance that might be due to the acquisition of vision cues (Cheng et al, 2018) and attentional capacity (Caldwell et al, 2003), sleep-deprived adults might prevent the use of additional sensory cues in the eye-guided task or even not be able to synergistically couple eye movements and postural sway, resulting in overall postural control performance improvement. Therefore, the aim of this study was to examine postural control performance of young sleep-deprived adults in fixating and performing horizontal saccades during an upright stance.…”

Section: Introductionmentioning

confidence: 99%

Saccadic Eye Movements Attenuate Postural Sway but Less in Sleep-Deprived Young Adults

Vargas

Bicalho

Rodrigues

et al. 2020

Front. Sports Act. Living

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Sleep deprivation affects the performance of postural control and several other aspects related to attentional mechanisms that may alter sensory cue acquisition strategies. This study aimed to examine the possible effects of horizontal saccades and ocular fixation on a target in the performance of postural control in young adults with sleep deprivation. Twenty-six adults formed two groups, tested in two evaluations. In the first evaluation, participants slept normally on the night before. In the second evaluation, 13 participants were sleep deprived (SD) and 13 slept normally (control group [CG]) on the night before. In both evaluations, each participant stood upright as still as possible, in two experimental conditions: fixating the eye on a target and performing saccadic movement toward a target presented in two different locations (0.5 Hz). Each participant performed 3 trials in each condition, lasting 62 s each. Body oscillation was obtained in both anterior-posterior and medial-lateral directions. Results showed that SD participants swayed with a larger magnitude and higher velocity after sleep deprivation in the fixation condition. In the saccadic condition, body sway magnitude and velocity were reduced but were still larger/higher in the SD participants. Sleep deprivation deteriorates the performance of postural control. Saccadic eye movements improve postural control performance even in sleep-deprived participants but are still not sufficient to avoid postural control deterioration due to sleep deprivation.

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“…As formas de avaliar o sono antes dos testes variam nos experimentos. Nos artigos consultados, foi observado o uso de questionários, diários de sono, polissonografia e actigrafia (KARITA et al, 2006;ROBILLARD et al, 2011b;SARGENT et al, 2012;SMITH;CHENG;KERR, 2012;BARELA, 2014;PHAM et al, 2014;CUTHBERTSON et al, 2015;FURTADO et al, 2016), que foram utilizados de forma individual ou em conjunto com mais de uma ferramenta de modo a complementar as informações (SARGENT et al, 2012;SMITH;CHENG;KERR, 2012;FURTADO et al, 2016) .…”

Section: A Privação E Restrição Do Sono Modificando Processos De Atenunclassified

Efeitos da restrição e da privação do sono sob o controle motor humano. Consequências no controle da marcha e da postura

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Differences in sensory reweighting due to loss of visual and proprioceptive cues in postural stability support among sleep-deprived cadet pilots

Cited by 19 publications

References 19 publications

Assessment of the static upright balance index and brain blood oxygen levels as parameters to evaluate pilot workload

Assessment of the static upright balance index and brain blood oxygen levels as parameters to evaluate pilot workload

Saccadic Eye Movements Attenuate Postural Sway but Less in Sleep-Deprived Young Adults

Efeitos da restrição e da privação do sono sob o controle motor humano. Consequências no controle da marcha e da postura

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