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Review paper

Balance assessment after altering stimulation of the neurosensory system

By
Valentina Li Causi Orcid logo ,
Valentina Li Causi
Contact Valentina Li Causi

Orthopaedic and Trauma Operative Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, University Hospital G. Martino, Messina, Italy

"Vanico" Physical Medicine and Rehabilitation Centre and "Vittoria" Clinic of Intensive Rehabilitation, Castelvetrano, Italy

Alessandro Manelli ,
Alessandro Manelli

Division of Rehabilitation Activities Management, Department of Primary Care, ASL1 Imperiese, Bussana di Sanremo, Italy

Valentina Gianpaola Marini ,
Valentina Gianpaola Marini

Division of Rehabilitation Activities Management, Department of Primary Care, ASL1 Imperiese, Bussana di Sanremo, Italy

Mario Cherubino ,
Mario Cherubino

Division of Plastic and Reconstructive Surgery, Department of Biotechnology and Life Sciences (DBSV), University of Insubria, Varese, Italy

Luigi Meccariello ,
Luigi Meccariello

Department of Orthopaedics and Traumatology, AORN San Pio, Benevento, Italy

Michael Mazzacane ,
Michael Mazzacane

Orthopaedic and Trauma Operative Unit, Department of Biotechnology and Life Sciences (DBSV), University of Insubria, Varese, Italy

Mario Ronga
Mario Ronga
Contact Mario Ronga

Orthopaedic and Trauma Operative Unit, Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, University Hospital G. Martino, Messina, Italy

Abstract

Aim
Posture requires fine integrative elaboration, performed by the central nervous system, of neurosensory information originated from the visual, vestibular and spinal circuit. Many perturbing agents can influence this elaboration and then the postural stability. Several studies have evaluated only the effect of a single agent on the postural control. The study analysed the perturbing effect of several external agents on the different sensorial circuits in terms of postural balance loss in orthostatism.
Methods
The postural stability of 31 patients was evaluated with a static posturography platform in basal conditions and after exposure to an external agent in the following order: stroboscopic light projecting, mechanical rotations on a swivel chair, feet desensitization through ice, administration of an alcoholic drink at intervals which depended on the participant return to basic posturographic values. Tests were performed with open eyes (OE), closed eyes (CE) and reducing plantar perception through the use of a rubber pillow.
Results
The stroboscopic light altered the postural control. The swivel chair disturbed only with CE. Ice and alcohol increased
the oscillation area. The alcohol test had a significant reduction in postural control with OE compared to CE. The rubber cushion increased the oscillation area in all OE tests and with CE in alcohol and ice tests.
Conclusion
The different agents did not trigger postural control deficits in the same way. A cold environment with psychedelic lights and the use of alcoholic beverages altered significantly the postural stability by influencing simultaneously all perceptions
(visual, vestibular and somatosensory feedback). 

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