Subjective visual vertical imprecision during lateral head tilt in patients with chronic dizziness

Most prior studies of the subjective visual vertical (SVV) focus on inaccuracy of subjects’ SVV responses with the head in an upright position. Here we investigated SVV imprecision during lateral head tilt in patients with chronic dizziness compared to healthy controls. Forty-five dizzy patients and...

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Veröffentlicht in:Experimental brain research 2022, Vol.240 (1), p.199-206
Hauptverfasser: Winnick, Ariel A., Wang, Chia-Han, Ko, Yu-Hung, Chang, Tzu-Pu
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Ko, Yu-Hung
Chang, Tzu-Pu
description Most prior studies of the subjective visual vertical (SVV) focus on inaccuracy of subjects’ SVV responses with the head in an upright position. Here we investigated SVV imprecision during lateral head tilt in patients with chronic dizziness compared to healthy controls. Forty-five dizzy patients and 45 healthy controls underwent SVV testing wearing virtual reality (VR) goggles, sitting upright (0°) and during head tilt in the roll plane (± 30°). Ten trials were completed in each of three static head positions. The SVV inaccuracy and SVV imprecision were analyzed and compared between groups, along with systematic errors during head tilt, i.e., A-effect and E-effect (E-effect is a typical SVV response during head tilts of ± 30°). The SVV imprecision was found to be affected by head position (upright/right head tilt/left head tilt, p  
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subjects Audiometry
Biomedical and Life Sciences
Biomedicine
Brain research
Buddhism
Causes of
Clinical trials
Computer applications
Diagnosis
Dizziness
Dizziness - etiology
Head
Head Movements
Humans
Methods
Neurology
Neurosciences
Orientation
Patients
Positioning
Research Article
Sensory integration
Sensory neurons
Ultrasonic imaging
Vestibular system
Vestibule, Labyrinth
Virtual reality
Visual Perception
title Subjective visual vertical imprecision during lateral head tilt in patients with chronic dizziness
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