Objective To investigate the optimal stimulation intensity and reference range of unilateral centrifugation subjective visual vertical (UC-SVV) test to fill technical gap in otolithic function evaluation patients with peripheral vestibular diseases. Method Forty healthy subjects (median age 28 years) underwent a UC-SVV at rotation speeds 60, 120, 180, 240 deg./s using Neuro Kinetics Inc. (NKI) I-Portal 6.0 NOTC rotating chair system. The deviation angles line centre left/right positions each...

Objective: To evaluate horizontal semicircular canal (HSC) effects according to Ewald's law and nystagmus characteristics of benign paroxysmal positional vertigo (HSC-BPPV) in the supine roll test. Methods: Patients with HSC-BPPV ( n = 72) healthy subjects 38) were enrolled. Latency, duration, intensity elicited by test recorded using video nystagmography. Results: In patients HSC-BPPV, could be right/left head position (positional nystagmus) during head-turning (head-turning nystagmus),...

Objective To explore the direction and SPV (slow phase velocity) of components spontaneous nystagmus (SN) in patients with vestibular neuritis (VN) correlation between SN affected semicircular canals (SCCs). Additionally, we aimed to elucidate role directional features peripheral diagnosing acute syndrome. Materials methods A retrospective analysis was conducted on 38 diagnosed VN our hospital 2022 2023. The recorded three-dimensional videonystagmography (3D-VNG) video head impulse test...

Objective: To investigate the characteristics and clinical utility of vestibular autorotation test (VAT) in patients with migraine.Methods: This study included two groups, an experimental group (441 patients) a control (65 healthy subjects). Both groups undertook VAT; parameters evaluated were horizontal gain/phase, vertical gain/phase asymmetry. The differences VAT results between investigated.Results: There no statistical data when compared to reference value from manufacturer (p > .05)....

Objective:To investigate the classification of head shaking nystagmus（HSN） and its clinical value in vestibular peripheral diseases. Methods:Clinical data 198 patients with disorders presenting HSN were retrospectively analyzed. Video Nystagmograph（VNG） was applied to detect spontaneous nystagmus（SN）, HSN, Caloric Test（CT）. The intensity direction SN as well unilateral weakness（UW） preponderance（DP） values caloric test analyzed patients. Results:Among disease, there 105 males 93 females, an...

Objective: To analyze and discuss the parameters clinical significance of nystagmus in patients with benign positional paroxysmal vertigo (BPPV) posterior semicircular canal. Methods: The subjects study were 564 BPPV diagnosed canal canalithis (PSC-can) from January 2016 to July 2017 Tianjin No.1 Central Hospital, including 186 males 378 females, a median age 57 years. induced Dix-Hallpike test was recorded by video nystagmuo graph(VNG), direction, latency, duration time intensity...

Benign paroxysmal positional vertigo (BPPV) is the most common vestibular peripheral disease, and has increasingly become focus of research on diseases in recent years. In particular, otolaryngology neurology societies worldwide have placed a greater study BPPV. This article reviews current diagnosis treatment status progress benign China from aspects disease etiology, pathology, pathophysiology. We will also consider potential future this field.

Objective To analyze the characteristics of subjective visual horizontal （SVH） and evaluate its clinical value for vestibular function in peripheral unilateral hypofunction （UVH）. Methods Eighty-five patients with UVH （study group） 39 normal persons （control accepted tests, including SVH, vertical （SVV） caloric test by videonystagmography. The parameters angle SVH SVV, directional preponderance （DP） weakness（UW） were observed. correlation between SVH/SVV, DP, UW course disease...

The aim of this study was to observe the 3-dimensional (3D; horizontal, vertical, and torsional) characteristics nystagmus in patients with posterior semicircular canal canalithiasis (PSC-can)-related benign paroxysmal positional vertigo (BPPV) investigate its correlation Ewald's.In all, 84 PSC-can were enrolled. latency, duration, direction, slow-phase velocity induced by Dix-Hallpike test head-hanging sitting positions recorded using 3D video nystagmography (3D-VNG). torsional components...

The study aimed to analyze the three-dimensional characteristics of nystagmus induced by different semicircular canal combinations in healthy young people, and determine reference range slow phase velocity (SPV) its asymmetry.

Exploring the performance characteristics of spontaneous nystagmus（SN） in video-head impulse test（vHIT） and its possible effects on saccade.

Abstract Secretory otitis media (SOM) is a common and frequently occurring disease featured by middle ear cavity exudant, nausea, hearing loss. Morbidity of children higher than that adults. The pathogenesis etiology SOM are clear so far. Previous reports concluded the mechanical obstruction dysfunction eustachian tube among important causes infection. mechanism infection immune response in currently becoming research hot spot, providing reference for further study.

The characteristics of horizontal and vertical components nystagmus evoked by the supine roll test in patients with semicircular canal canalolithiasis (HSC-Can) were analyzed, according to Ewald's first law. It provided a basis for study human function structure, objective diagnosis, treatment benign paroxysmal positional vertigo (BPPV).The records that had been tested 2-dimensional videonystagmography (2D-VNG) reviewed between June 2019 2021. intensity direction elicited analyzed 189...

Objective: To evaluate the data of unilateral centrifugation subjective visual vertical (UC-SVV) in healthy young people.To study function utricle. Methods: Between Decem ber 2017 and May 2018, thirty-two volunteers were tested by static vertical(SVV) low velocity UC-SVV with Neuro Kinetics Inc I-portal 6.0 Video nystagmus recording system NOTC rotating chair system.The SVV preset angle -15.00°, 15.00°, -20.00°, 20.00°, -12.00° 12.00° respectively.UC-SVV test parameters: chair's peak speed...

Objective: To investigate the characteristics and clinical utility of vestibular autorotation test (VAT) in patients with migraine(VM). Methods: This study included two groups, a VM group (441 from Tianjin First Center Hospital between January 2015 May 2016) control (65 healthy subjects). Both groups undertook VAT; parameters evaluated were horizontal gain/phase, vertical gain/phase asymmetry. The differences VAT results investigated. Results: There statistically significant group, namely...

To discuss the characteristics of subjective visual gravity (subjective vertical/horizontal, SVV/SVH) and assess its clinical application for peripheral unilateral vestibular compensation.69 cases acute dysfunction patients (case group) accepted SVV/SVH, spontaneous nystagmus (SN), caloric test (CT) other function tests. 49 healthy people (control SVV/SVH only. SN weakness (UW) were selected as observation indicators. The correlations between SN, UW courses investigated respectively, well...