Vestibular contributions to the Romberg test: Testing semicircular canal and otolith function

Hálmagyi, G. Michael; Curthoys, Ian S.

doi:10.1111/ene.14942

Cited by 19 publications

(16 citation statements)

References 80 publications

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“…On Foam compared to Solid support, there is a rapid motion of several joints, and, thus, the large proprioceptive barrage contributes to enhancing the sensory input and the postural muscle activity. Standing on Foam should not imply impaired control by inordinate or inaccurate use of the information from the active and passively moving joints and muscles, which is normally considered an axiom [e.g., ( 7 , 116 , 117 )] that could be tenable only after fatigue ( 96 ). Any changes in muscle length, more so when rapid, activate, in fact, the large spindle afferent fibres, highly sensitive to the velocity of muscle stretch rather than the slow muscle changes in length as when standing on a Solid support ( 118 , 119 ).…”

Section: Discussionmentioning

confidence: 99%

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Sozzi

Ghai²,

Schieppati

2022

Front. Neurol.

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Different measurements of body oscillations in the time or frequency domain are being employed as markers of gait and balance abnormalities. This study investigates basic relationships within and between geometric and spectral measures in a population of young adult subjects. Twenty healthy subjects stood with parallel feet on a force platform with and without a foam pad. Adaptation effects to prolonged stance were assessed by comparing the first and last of a series of eight successive trials. Centre of Foot Pressure (CoP) excursions were recorded with Eyes Closed (EC) and Open (EO) for 90s. Geometric measures (Sway Area, Path Length), standard deviation (SD) of the excursions, and spectral measure (mean power Spectrum Level and Median Frequency), along the medio-lateral (ML) and antero-posterior (AP) direction were computed. Sway Area was more strongly associated than Path Length with CoP SD and, consequently, with mean Spectrum Level for both ML and AP, and both visual and surface conditions. The squared-SD directly specified the mean power Spectrum Level of CoP excursions (ML and AP) in all conditions. Median Frequency was hardly related to Spectrum Level. Adaptation had a confounding effect, whereby equal values of Sway Area, Path Length, and Spectrum Level corresponded to different Median Frequency values. Mean Spectrum Level and SDs of the time series of CoP ML and AP excursions convey the same meaning and bear an acceptable correspondence with Sway Area values. Shifts in Median Frequency values represent important indications of neuromuscular control of stance and of the effects of vision, support conditions, and adaptation. The Romberg Quotient EC/EO for a given variable is contingent on the compliance of the base of support and adaptation, and different between Sway Area and Path Length, but similar between Sway Area and Spectrum Level (AP and ML). These measures must be taken with caution in clinical studies, and considered together in order to get a reliable indication of overall body sway, of modifications by sensory and standing condition, and of changes with ageing, medical conditions and rehabilitation treatment. However, distinct measures shed light on the discrete mechanisms and complex processes underpinning the maintenance of stance.

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Section: Discussionmentioning

confidence: 99%

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Sozzi

Ghai²,

Schieppati

2022

Front. Neurol.

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“…It is possible that altered chemical composition of perilymph and endolymph may affect the ion channels of kinocilli and stereocilia, changing the thresholds of their sensitivity. However, the lower frequency of involvement of vestibular receptors in the pathological process with severe clinical manifestations of vestibular dysfunction, compared with auditory, in otitis media, which according to [2] may be due to low sensitivity of the vestibular neuroepithelium to toxins penetrating into the perilymphatic space from the middle ear, also attracts attention.…”

Section: Discussionmentioning

confidence: 99%

“…Peripheral vestibular disorders are difficult to differentiate due to non-specific symptoms, unclear formulation of patient complaints, multifactorial nature of dizziness and posture instability and lack of reliable screening methods [1]. All tests of the peripheral nervous system currently used in clinical practice are based on the measurement of oligosynaptic reflexes of the brain stem [2]. Stabilometry, based on the assessment of human balance, which allows to detect vestibulo-spinal disorders, is no exception [3].…”

Section: Introductionmentioning

confidence: 99%

“…Simulation of different sensory states allows to evaluate different mechanisms of translational control. Thus, a neutral position on a stable solid surface facing forward with open eyes allows us to assess the integrative interaction of the visual, somatosensory and vestibular systems in maintaining balance [8], while closing the eyes in the same position can assess the effects of somatosensory and vestibular systems [8], and replacement of a stationary platform with a moving one with closed eyes allows to assess mainly vestibular functions, and a solid surface with a pliable one -mainly somatosensory function [2].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of vestibular function in children with purulent media otitis by computer stabilometry

Lozova¹,

Garyuk²,

Pochuiеva³

et al. 2021

Eureka: HS

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The aim of the research – assessment of vestibular function in children with acute purulent otitis media by computer static stabilometry compared with typically developed children of the same age. Materials and methods: 22 children with purulent otitis media aged 4 to 7 years and 30 practically healthy peers were examined by static stabilometry on the device “MPFI stabilograph 1” (Kharkiv, Ukraine). Indicators of variation and shape of the pressure center distribution, spectral-correlation indicators of stabilograms, as well as integral indicators of stability (length, velocity and angle of postural oscillations) were taken into account and the equilibrium functions of the two sensory states (open and closed eyes) are calculated in the StabiliS software. Results: purulent otitis media causes posterior displacement of the absolute coordinates of the pressure center. In the state with closed eyes, children with purulent otitis differ from their healthy coevals by 14 of 24 stabilometric parameters, including stabilogram length, speed, angle and amplitude of oscillations, giving way to them in the stability of equilibrium. Children with purulent otitis media are more sensitive to the visual canal of postural control than their coevals. Involvement of visual afferents in postural control significantly improves balance maintenance in children with purulent otitis by reducing deviations of postural oscillations, which is reflected in the probable changes of 9 out of 24 stabilometric parameters compared to control. Conclusions: In preschool age, purulent otitis media leads to latent vestibular dysfunction, which is manifested by a violation of the stability of the vertical posture in a state with closed eyes and is compensated by visual-vestibulo-proprioceptive integration in the process of postural control.

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“…The patient's arms are crossed in front of his chest and his open palm rests on the opposite shoulder. The findings of the Romberg test were refined to provide an objective assessment of postural stability [27], [28]. The Romberg test can be used as a rapid screening tool for vestibular disease in the clinic [29].…”

Section: Introductionmentioning

confidence: 99%

A novel fast-qualitative balance test method of screening for vestibular disorder patients

Huy

Туан

et al. 2022

IJEECS

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Body balance test is one of the methods of assessing vestibular level. However, the results are still qualitative, depending on the subjectivity of the doctor. This study proposes a new, low-cost method to quantitatively determine the degree of body imbalance. The proposal includes a low-cost laser source, a proposed rectangular paper frame, a camera, and a computer. The rectangular frame is mounted on the patient. The laser source is fixed and projected onto this rectangular frame. The laser projection point is taken as the origin point to evaluate the movement of the frame, which is also the movement of the patient’s body. This rectangular frame is pre-marked with points to get more accuracy of the position of the laser point. Therefore, this measurement is not affected by the position of the camera during recording. The video is then procecced by computer to determine the position of laser point, it is also presented the movement of the patient’s body. Initial trials were conducted on vestibular and normal patients. The results show that there is a clear difference in the balance of the vestibular and healthy people. The proposed method can be used to support quantitative screening for vestibular disease.

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Vestibular contributions to the Romberg test: Testing semicircular canal and otolith function

Cited by 19 publications

References 80 publications

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Evaluation of vestibular function in children with purulent media otitis by computer stabilometry

A novel fast-qualitative balance test method of screening for vestibular disorder patients

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