Improving postural control through integration of sensory inputs and visual biofeedback

1995 ◽  
Vol 1 (4) ◽  
pp. 32-47
Author(s):  
Kenda Fuller ◽  
Lisa Huber
Author(s):  
Abdollah Moossavi ◽  
Meymaneh Jafari

Background and Aim: The vestibular system contributes in the stabilization of the head and body, orientation, and gazing through the pro­cessing of sensory inputs. A wealth of evidence supports the involvement of vestibular informa­tion in higher functions, too.Methods: In this paper, we reviewed the pre­vious studies on the effect of the vestibular sys­tem on memory as one of the cognitive func­tions.Results: Clinical and laboratory findings indi­cate the association of vestibular inputs (besides postural control and oculomotor) with a variety of higher functions, especially memory func­tion. Because part of the memory function is determined by other cognitive processes i.e. att­ention capacity, emotional disturbances, and executive functions, the study of the effect of vestibular inputs on these functions provides a more accurate view of how the vestibular inputs affect memory performance.Conclusion: Although our current knowledge on vestibular-memory interaction is increasing, the exact involvement of vestibular signals in memory representations is still unclear and needs further studies to determine the theore­tical basis of vestibular involvement in memory processing.


Author(s):  
Iu-Shiuan Lin ◽  
Dar-Ming Lai ◽  
Jian-Jiun Ding ◽  
Andy Chien ◽  
Chih-Hsiu Cheng ◽  
...  

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0132711 ◽  
Author(s):  
Carmen D’Anna ◽  
Maurizio Schmid ◽  
Daniele Bibbo ◽  
Maurizio Bertollo ◽  
Silvia Comani ◽  
...  

2017 ◽  
Vol 58 ◽  
pp. 188-193 ◽  
Author(s):  
Naoya Hasegawa ◽  
Kenta Takeda ◽  
Moe Sakuma ◽  
Hiroki Mani ◽  
Hiroshi Maejima ◽  
...  

2017 ◽  
Vol 5 (1) ◽  
pp. 126-147 ◽  
Author(s):  
Neil Anderson ◽  
Chris Button

Control of static posture is constrained by multiple sensory inputs, motor ability, and task constraints. Development of static postural control across the lifespan can be analyzed effectively using nonlinear analyses of center of pressure (CoP) time series, including approximate and sample entropy. In this paper, the key findings from studies using nonlinear analysis tools are reviewed to describe the development of postural control. Preschool children learn to adopt relatively unstable postures (e.g., standing) in which the regularity of CoP initially increases as a consequence of restricting mechanical degrees of freedom. As children age, CoP regularity decreases as degrees of freedom are released, thus enabling a more functional, adaptable type of postural control. Changes to sensory inputs or task constraints also affect the regularity of CoP sway. For example, removing vision, adding vibration, or imposing dual-task conditions affect performer’s CoP regularity differently. One limitation of approximate and sample entropy analysis is the influence of different input parameters on the output and subsequent interpretation. Ongoing refinement to entropy analysis tools concern determining appropriate values for the length of sequence to be matched and the tolerance level used with CoP data.


PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0244583
Author(s):  
Naoya Hasegawa ◽  
Kenta Takeda ◽  
Martina Mancini ◽  
Laurie A. King ◽  
Fay B. Horak ◽  
...  

Augmented sensory biofeedback training is often used to improve postural control. Our previous study showed that continuous auditory biofeedback was more effective than continuous visual biofeedback to improve postural sway while standing. However, it has also been reported that both discrete visual and auditory biofeedback training, presented intermittently, improves bimanual task performance more than continuous visual biofeedback training. Therefore, this study aimed to investigate the relative effectiveness of discrete visual biofeedback versus discrete auditory biofeedback to improve postural control. Twenty-two healthy young adults were randomly assigned to either a visual or auditory biofeedback group. Participants were asked to shift their center of pressure (COP) by voluntary postural sway forward and backward in line with a hidden target, which moved in a sinusoidal manner and was displayed intermittently. Participants were asked to decrease the diameter of a visual circle (visual biofeedback) or the volume of a sound (auditory biofeedback) based on the distance between the COP and the target in the training session. The feedback and the target were given only when the target reached the inflection points of the sine curves. In addition, the perceptual magnitudes of visual and auditory biofeedback were equalized using Stevens’ power law. Results showed that the mean and standard deviation of the distance between COP and the target were reduced int the test session, removing the augmented sensory biofeedback, in both biofeedback training groups. However, the temporal domain of the performance improved in the test session in the auditory biofeedback training group, but not in the visual biofeedback training group. In conclusion, discrete auditory biofeedback training was more effective for the motor learning of voluntarily postural swaying compared to discrete visual biofeedback training, especially in the temporal domain.


2012 ◽  
Vol 126 (10) ◽  
pp. 984-988 ◽  
Author(s):  
R G Kanegaonkar ◽  
K Amin ◽  
M Clarke

AbstractIntroduction:Normal balance relies on three sensory inputs: vision, proprioception and the peripheral vestibular system. This study assessed hearing change and postural control in normal subjects.Materials and methods:Postural control in 20 normal volunteers was assessed using a Nintendo Wii gaming console and balance board. Each subject was tested standing upright for 30 seconds in a clinic room and a soundproof room with their eyes open, eyes closed, whilst standing on and off foam, and with and without ear defenders.Results:There was significantly more postural sway in the following subjects: those standing with their eyes closed vs those with eyes open (normal room, p = 0.0002; soundproof room, p = 0.0164); those standing on foam with eyes open vs those standing normally with eyes open (in both rooms; p < 0.05); those standing with eyes open in a soundproof room vs a normal room (p = 0.0164); and those standing on foam in a soundproof room with eyes open and wearing ear defenders vs those in the same circumstances but without ear defenders.Conclusion:Our results suggest that this method provides a simple, inexpensive tool for assessing static postural control. Whilst it is recognised that visual input and proprioception play a central role in maintaining posture, our findings suggest that ambient sound and hearing may also have a significant influence.


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