Postural responses of patients with bilateral vestibular loss and healthy subjects to sinusoidal tilts

İmir, Mehmet
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 coordinates but different respect to platform coordinates at low frequency (f=0.05 Hz). In contrast, their both CoM motions became more distinct at high frequency (f=0.17 Hz). It is argued that vestibular loss can be compensated by other available sensory information at low frequency. However, this compensation started to inadequate for maintaining postural balance at high frequency especially in the absence of visual information. In addition, heterogeneous response characteristics of patients in this study suggest that ability of patients to compensate their vestibular sensory loss differ across patients. 


Effect of the vestibular system on search and fall behaviour of human postural sway
Cengiz, Berat Can; Gürses, Senih; Department of Engineering Sciences (2017)
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). Ho...
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...
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...
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...
Pilates method as a kind of mind body practice: women practitioners’ opinions on their physical and psychological wellbeing
Öztürk, Filiz; Koçak, Mehmet Settar; Department of Physical Education and Sports (2019)
As a mind-body practice, Pilates is a method of strengthening and stretching the body with mental focus and controlled breathing according to basics of anatomy and body mechanics, consists of exercises on mat and with machines. J. H. Pilates developed it at the beginning of 1900s favoured for physical rehabilitation, performance enhancement, and positive psychological effects. The purpose of this study was to determine women Pilates practitioners’ opinions on their physical and psychological wellbeing. Qual...
Citation Formats
M. İmir, “Postural responses of patients with bilateral vestibular loss and healthy subjects to sinusoidal tilts,” M.S. - Master of Science, Middle East Technical University, 2017.