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Visual fixation suppression of caloric nystagmus in progressive supranuclear palsy - A comparison with Parkinson's disease.
J Vestib Res
January 2024
Department of Neurology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan.
Article Synopsis
- The study investigates visual fixation suppression (VS) in patients with progressive supranuclear palsy (PSP) compared to those with Parkinson's disease (PD), focusing on its potential as a diagnostic tool.
- Researchers analyzed data from 26 PSP patients and 26 PD patients, examining various eye movement metrics and brain imaging findings.
- Results showed that PSP patients exhibited a significant impairment in VS even in early stages, suggesting that VS could serve as a useful biomarker for distinguishing between PSP and PD.
Vestibular Function in Older Adults With Cognitive Impairment: A Systematic Review.
Ear Hear
October 2021
Department of Translational Neurosciences, University of Antwerp, Antwerp, Belgium.
Importance: Given the rising prevalence of patients with dementia and those at risk for it, early identification is prioritized. As vestibular dysfunction is associated with Alzheimer's disease (AD) and may contribute to its onset, vestibular assessment may yield an opportunity in early dementia screening.
Objective: This systematic review structures and compares the different raw outcome measures used to assess vestibular function while comparing older adults with preserved cognition to individuals with cognitive impairment, either suffering from mild cognitive impairment (MCI) or AD.
Clinical Application of the Vestibular Stimulation Effect on Balance Disorders with Dementia.
Curr Alzheimer Res
January 2021
Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki,Japan.
Background: In a previous study on Alzheimer's disease (AD), we showed that vestibular dysfunction derived from cerebral disorders contributes to balance disorders. No previous clinical study has attempted to prevent the progression of balance disorders in dementia patients through vestibular stimulation using an air caloric device.
Objective: The purpose of this pilot study was to delay the progression of balance disorders by inducing vestibular compensation, specifically by utilizing the effect of vestibular stimulation to activate the cerebrum.
The role of vertical semicircular canal function in the vertical component of skull vibration-induced nystagmus.
Acta Otolaryngol
August 2020
Otoneurology Unit, ENT Department, Hospital "La Fe", Valencia, Spain.
Generally, vertical component of the skull vibratory nystagmus (VCN) is ignored in the clinical practise. Thus, the relative contribution of the vestibular organs in the presence of VCN remains unknown. To determine the association between vertical semicircular canal (vSCC) function and the presence of VCN.
View Article and Find Full Text PDFEye activity tracks task-relevant structures during speech and auditory sequence perception.
Nat Commun
December 2018
Key Laboratory for Biomedical Engineering of Ministry of Education, Interdisciplinary Institute of Neuroscience and Technology, Qiushi Academy for Advanced Studies, College of Biomedical Engineering and Instrument Sciences, Zhejiang University, 310027, Hangzhou, China.
The sensory and motor systems jointly contribute to complex behaviors, but whether motor systems are involved in high-order perceptual tasks such as speech and auditory comprehension remain debated. Here, we show that ocular muscle activity is synchronized to mentally constructed sentences during speech listening, in the absence of any sentence-related visual or prosodic cue. Ocular tracking of sentences is observed in the vertical electrooculogram (EOG), whether the eyes are open or closed, and in eye blinks measured by eyetracking.
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