Congenital Deafness Alters Sensory Weighting for Postural Control

Maheu, Maxime; Sharp, Andréanne; Pagé, Sara; Champoux, François

doi:10.1097/aud.0000000000000449

Cited by 16 publications

(17 citation statements)

References 15 publications

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“…Anterior-posterior postural sway increased with sensory perturbations similarly in both environments. This is probably because the visual perturbation in both environments was in the anterior-posterior plane (flow of people or stars), and so a greater response in this direction is expected with an increased visual weight ( 51 ). As expected, further insights into people's motor behavior can be obtained from the head segment.…”

Section: Discussionmentioning

confidence: 99%

Postural and Head Control Given Different Environmental Contexts

et al. 2021

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Virtual reality allows for testing of multisensory integration for balance using portable Head Mounted Displays (HMDs). HMDs provide head kinematics data while showing a moving scene when participants are not. Are HMDs useful to investigate postural control? We used an HMD to investigate postural sway and head kinematics changes in response to auditory and visual perturbations and whether this response varies by context. We tested 25 healthy adults, and a small sample of people with diverse monaural hearing (n = 7), or unilateral vestibular dysfunction (n = 7). Participants stood naturally on a stable force-plate and looked at 2 environments via the Oculus Rift (abstract “stars;” busy “street”) with 3 visual and auditory levels (static, “low,” “high”). We quantified medio-lateral (ML) and anterior-posterior (AP) postural sway path from the center-of-pressure data and ML, AP, pitch, yaw and roll head path from the headset. We found no difference between the different combinations of “low” and “high” visuals and sounds. We then combined all perturbations data into “dynamic” and compared it to the static level. The increase in path between “static” and “dynamic” was significantly larger in the city environment for: Postural sway ML, Head ML, AP, pitch and roll. The majority of the vestibular group moved more than controls, particularly around the head, when the scenes, especially the city, were dynamic. Several patients with monaural hearing performed similar to controls whereas others, particularly older participants, performed worse. In conclusion, responses to sensory perturbations are magnified around the head. Significant differences in performance between environments support the importance of context in sensory integration. Future studies should further investigate the sensitivity of head kinematics to diagnose vestibular disorders and the implications of aging with hearing loss to postural control. Balance assessment and rehabilitation should be conducted in different environmental contexts.

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Section: Discussionmentioning

confidence: 99%

Postural and Head Control Given Different Environmental Contexts

et al. 2021

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“…The vestibular system is, of course, just one source of information contributing to balance control, alongside visual, somatosensory, and even auditory input [22, 23]. Various studies have considered disorders of postural stability in patients with hearing loss, as well as the impact of cochlear implantation on postural stability [10, 19, 24]. However, the majority of falls occur during ambulation, not static stance, and a key factor in preventing falls is the ability to quickly take an appropriate recovery step.…”

Section: Introductionmentioning

confidence: 99%

Assessing Gait Stability before and after Cochlear Implantation

Kaczmarczyk

Błażkiewicz

Wiszomirska

et al. 2019

BioMed Research International

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Background It is known that cochlear implantation may alter the inner ear and induce vestibular disorders. Research Question How does cochlear implantation influence gait stability? Material and Methods. An experimental group of twenty-one subjects scheduled for cochlear implantation underwent gait testing twice, on the day before cochlear implantation (BCI) and three months after cochlear implantation (ACI), using a motion capture system. A control group of 30 age-matched healthy individuals were also tested. Results In the experimental group, the gait stability ratio (GSR) was found to improve in 17 subjects after implantation, by an average of 6%. Certain other parameters also showed statistically significant improvement between the two experimental group tests: step time (p<0.001), single-support phase walking speed (p<0.05), and center of mass (CoM) (p<0.05). Using the CoM results of the control group, we devised a stability classification system and applied it to the pre- and postimplantation subjects. After implantation, increases were seen in the number of subjects classified in interval II (strong stability) and III (weak stability). The number of subjects in interval I (perfect stability) decreased by 1 and in interval IV (no stability) by 4. Significance (1) Although cochlear implantation intervenes in the vestibular area, we found evidence that gait stability improves in most subjects after the surgery, reducing the risk of falls. (2) We found statistically significant improvements in individual parameters (such as single-support phase time), in GSR, and in CoM. (3) Based on CoM results, we proposed a new rule-of-thumb way of classifying patients into gait stability intervals, for use in rehabilitation planning and monitoring.

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“…Auditory input has an impact on postural control and balance (e.g., Houde et al, 2016 ; Maheu et al, 2017a , b , 2019 ). It has been suggested that the auditory input can be used to compensate for vestibular loss (e.g., Maheu et al, 2019 ), which is a common problem among older adults ( Baloh et al, 2001 ).…”

Section: Impact On Posture and Balancementioning

confidence: 99%

Use of Music Therapy as an Audiological Rehabilitation Tool in the Elderly Population: A Mini-Review

2021

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It is well known and documented that sensory perception decreases with age. In the elderly population, hearing loss and reduced vestibular function are among the most prevalently affected senses. Two important side effects of sensory deprivation are cognitive decline and decrease in social participation. Hearing loss, vestibular function impairment, and cognitive decline all lead to a decrease in social participation. Altogether, these problems have a great impact on the quality of life of the elderly. This is why a rehabilitation program covering all of these aspects would therefore be useful for clinicians. It is well known that long-term music training can lead to cortical plasticity. Behavioral improvements have been measured for cognitive abilities and sensory modalities (auditory, motor, tactile, and visual) in healthy young adults. Based on these findings, it is possible to wonder if this kind of multisensory training would be an interesting therapy to not only improve communication but also help with posture and balance, cognitive abilities, and social participation. The aim of this review is to assess and validate the impact of music therapy in the context of hearing rehabilitation in older adults. Musical therapy seems to have a positive impact on auditory perception, posture and balance, social integration, and cognition. While the benefits seem obvious, the evidence in the literature is scarce. However, there is no reason not to recommend the use of music therapy as an adjunct to audiological rehabilitation in the elderly when possible. Further investigations are needed to conclude on the extent of the benefits that music therapy could bring to older adults. More data are needed to confirm which hearing abilities can be improved based on the many characteristics of hearing loss. There is also a need to provide a clear protocol for clinicians on how this therapy should be administered to offer the greatest possible benefits.

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Congenital Deafness Alters Sensory Weighting for Postural Control

Abstract: This increased somatosensory reliance may increase postural sway when it comes to more challenging postural conditions.

Cited by 16 publications

References 15 publications

Postural and Head Control Given Different Environmental Contexts

Postural and Head Control Given Different Environmental Contexts

Assessing Gait Stability before and after Cochlear Implantation

Use of Music Therapy as an Audiological Rehabilitation Tool in the Elderly Population: A Mini-Review

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