Effect of the vestibular system on search and fall behaviour of human postural sway

Download

index.pdf

Date

2017

Author

Cengiz, Berat Can

Metadata

Show full item record

Item Usage Stats

235
views

241
downloads

In a person's daily life, upright stance is a very essential postural position for using hands, locomotion, communication, etc. These motivations probably help a baby to solve this complex motor task faster. A healthy individual is thought to maintain his/her upright posture mainly by the help of four senses: vestibular, proprioception, vision, and somatosensory. With a classical view, human upright posture control mechanism is approached as a control system with multi inputs almost single output (CoPx). However, it is not only a classical mechanical control system with sensory inputs but also an actively acting system to drive perceptual information for exploring its environment. In this thesis, these active movements, with low-frequency characteristics, performed by healthy control subjects were named as a search (benign) behavior while the rapid corrections, with high-frequency characteristics, performed by bilateral vestibular loss (BVL) patients were named as a fall (malign) behavior. The contribution of the vestibular system to postural control was examined comparing the quiet stance CoPx signals of BVL and healthy subjects measured in different eye and surface conditions. Finally, results was discussed with an ecological perspective.

Subject Keywords

Posture., Standing position., Vestibular apparatus., Equilibrium (Physiology)., Vestibular function tests.

URI

http://etd.lib.metu.edu.tr/upload/12621298/index.pdf
https://hdl.handle.net/11511/26649

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

The Somatosensory and vestibular interaction in human postural control Akçay, Mustafa Emre; Özgören, Mustafa Kemal; Gürses, Senih; Department of Mechanical Engineering (2015) Human upright posture is essential for people during daily activities. Upright posture is a skill, which is acquired before walking during the human development. Classically defined five senses (as the sense of kinesthesia is not included) are not enough to obtain this difficult and important skill. Thus, the humans need another group of senses; i.e., proprioception, vestibular sensor, joint receptors etc. to achieve the upright posture. In this thesis, two distinct stimulations were given to the subjects t...
Postural responses of patients with bilateral vestibular loss and healthy subjects to sinusoidal tilts İmir, Mehmet; Gürses, Senih; Department of Engineering Sciences (2017) Posture control to maintain the stability of upright posture is a very complex task. It requires sensorimotor integration of all sense organs. If one of these organs loses its functionality, the person may have difficulties in maintaining postural balance. This study examines the difference in postural responses of patients with bilateral vestibular loss and healthy subjects to sinusoidal tilts. It has shown that center of mass(CoM) motions of control and patient groups were similar respect to space coordin...
Foot Somatosensory Information Contributes To Quiet Stance Hassanpour, Seyedehmaryam; Gürses, Senih; Hohenberger, Annette Edeltraud; Department of Engineering Sciences (2016) Most of the posture and balance studies have mentioned that in human beings, balance is achieved and maintained by a complex set of control systems that include sensory input from vision (sight), proprioceptive sensors of the muscles, somatosensory senses from skin receptors (touch), and the vestibular system (motion, equilibrium, spatial orientation). Based on previous studies, postural movement strategies are known to be highly affected by both somatosensory and vestibular information [23]. The present st...
Effect of cognitive task difficulty on postural control Gürsoy, Zeren Görkem; Kirazcı, Sadettin; Department of Physical Education and Sports (2019) Human posture control is accompanied usually in daily life with other tasks, such as cognitive tasks. This thesis is on the effects of cognitive task difficulty on postural control, the postural control mechanisms, attention and its relation to posture control and finally the dual task environments for posture control. The experiment’s set an individualized difficulty level for each participant. Results indicate that when motor and challenging cognitive tasks are completed under dual task conditions, dual t...
Shoulder proprioception in male tennis players between ages 14-16 Boyar, Alaaddin; Korkusuz, Feza; Department of Physical Education and Sports (2006) Proprioceptive information appear to play an important role in stability and movements of shoulder joint in sporting activities especially in tennis. The purpose of this study was to measure the shoulder proprioceptive differences, and assess proprioceptive sense between dominant and non-dominant shoulders between male tennis players and controls between ages 14 - 16. 15 young male tennis players with a mean age 14.6 ± 0.7 years and 15 young male sedentary individuals with a mean age 14.8 ± 0.9 years partic...

Citation Formats

B. C. Cengiz, “Effect of the vestibular system on search and fall behaviour of human postural sway,” M.S. - Master of Science, Middle East Technical University, 2017.