Spine Posture Influences Tactile Perceptual Sensitivity of the Trunk Dorsum
| Autor: | Leah R. Bent, Stephen H.M. Brown, Simone G. V. S. Smith, Shawn M. Beaudette |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male musculoskeletal diseases 0301 basic medicine Dorsum medicine.medical_specialty Spatial acuity media_common.quotation_subject Posture Biomedical Engineering Mechanotransduction Cellular 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Hardness Elastic Modulus Skin Physiological Phenomena Perception Sensory threshold medicine Humans Sensitivity (control systems) media_common Back integumentary system business.industry Work (physics) musculoskeletal system Trunk Spine Surgery Spine (zoology) 030104 developmental biology Touch Sensory Thresholds Female Stress Mechanical business 030217 neurology & neurosurgery |
| Zdroj: | Annals of Biomedical Engineering. 45:2804-2812 |
| ISSN: | 1573-9686 0090-6964 |
| DOI: | 10.1007/s10439-017-1924-3 |
| Popis: | The purpose of the current work was to quantify the influence of posture-mediated skin deformation on trunk dorsum tactile perceptual sensitivity. Twelve young and healthy individuals were assessed while adopting three different spine postures (extension, neutral and flexion). Tactile sensitivity threshold tests (T10 and L4 vertebral levels) included measures of touch sensitivity, spatial acuity and stretch sensitivity. The results demonstrate that tactile sensitivity can differ due to changes in body posture. The skin of the trunk dorsum had increased thresholds for touch sensitivity, longitudinal spatial acuity and transverse stretch sensitivity in spine flexion. Furthermore, spine flexion also resulted in a reduced sensory threshold to stretching stimuli in the longitudinal direction. The opposite trends occurred when participants adopted spine extension. It is suggested that posture-mediated skin deformation generates changes in the amount of strain experienced by individual skin mechanoreceptors, and the relative spacing between mechanoreceptors. Furthermore, it is suggested that "pre-stretch" of the skin brings mechanoreceptors closer to their stretch activation thresholds, thereby increasing an individual's sensitivity to skin stretch when in spine flexion. |
| Databáze: | OpenAIRE |
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