“…We speculated that persistent torsional down-beating nystagmus was caused by the light cupula of the posterior semicircular canal. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…INTRODUCTION: In patients with benign paroxysmal positional vertigo, BPPV; a torsional-vertical down beating positioning nystagmus can be elicited in the supine straight head-hanging position test or in the Dix-Hallpike test to either side. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…During the EM, down-beating nystagmus and falling onto or off the examination table occurred in approximately 15% of cases. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Therefore, congruous torsional down beating nystagmus should always be checked when performing Semont's maneuver because it could help in predicting success of physical treatment and in managing patients.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…A 18-year-old male, screen printer by profession developed sensory motor polyneuropathy, change in his behavior, bilateral 6(th) and 7(th) cranial nerve palsies, down beat nystagmus and cerebellar dysarthria. He had bilaterally prolonged P100 latency; left: 137 ms; right: 144 ms. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The EMG analysis revealed at FAST higher agonist VL activation from the late up-beat (MTU stretching) to the early down-beat phases as well as increased muscle co-activation of VL and BF muscles from the late down-beat to early up-beat phases of dolphin-kicking. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Our manipulations gave rise to various rhythmic structures, including polyrhythms and rhythms with missing strong- and/or down-beats. Listeners (N = 10) were asked to rate the degree of syncopation they perceived in response to a rendering of each score. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Although the serum level of lithium was within the normal therapeutic range, her daily dose of lithium was reduced to 600 mg and then stopped. 6 days after cessation of lithium, down beat nystagmus and right hypertropia were completely resolved and symptoms did not recur over a year. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Down beating torsional nystagmus was seen in 6 out of 13 cases. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…While supine, 20.8% of subjects showed up-beating nystagmus, 8.9% showed down-beating, and 26.7% had horizontal nystagmus. In the lateral positions combined, 37.1% displayed horizontal nystagmus on at least one side, while 6.4% showed up-beating, 6.4% showed down-beating. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…However, she had horizontal and slightly down-beating gaze-evoked nystagmus at primary gaze position. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We lately reported the cases of patients complaining positional vertigo whose nystagmic pattern was that of a peripheral torsional vertical positional down beating nystagmus originating from a lithiasis of the non-ampullary arm of the posterior semicircular canal (PSC). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…RESULTS: Among the 41 cases, 19 (46.3%) patients showed vertical up-beating nystagmus with or without torsional component and geotropic, apogeotropic horizontal nystagmus, and were diagnosed with posterior-horizontal canal. 11 (26.8%) patients showed vertical up-beating nystagmus with torsional component on one side and vertical down-beating nystagmus with or without torsional component on the other side during Dix-Hallpike test or straight head hanging test and were diagnosed with posterior-anterior canal benign paroxysmal positional vertigo 9 (26.8%) patients showed vertical down-beating nystagmus with or without torsional component and geotropic, apogeotropic horizontal nystagmus, and were diagnosed with anterior-horizontal canal 2 (4.9%) patients showed vertical geotropic torsional up-beating nystagmus on both sides and were diagnosed with bilateral posterior canal benign paroxysmal positional vertigo. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Anterior canal BPPV (AC) is more rare than posterior canal BPPV; it presents a prevalent down beating positioning nystagmus, with a torsional component clockwise for the left canal, counterclockwise for the right canal. …”
Enlace del recurso
Enlace del recurso

“…RESULTS: We classified the 209 patients into 14 disorder categories, including 110 cases of vestibular neuritis, 30 of idiopathic sudden sensorineural hearing loss with vertigo, 17 of the first attack of continuous vertigo with migraine, 15 of Ramsay Hunt syndrome, 11 of acute labyrinthitis secondary to chronic otitis media, 8 of vestibular schwannoma, 6 of posterior circulation infarction and/or ischemia, 3 of cerebellar abscess secondary to chronic otitis media, 3 of AVS caused by trauma or surgery, 2 of AVS with down-beating nystagmus, 1 of multiple sclerosis of the medulla oblongata, 1 of epidermoid cyst of the posterior cranial fossa, 1 of a probable acute otolithic lesion, and 1 of AVS without measurable vestibular dysfunction. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…RESULTS: The number of patients with perverted nystagmus was 15, upbeating was 1 and down-beating was 14. Among these patients, 5 patients have brain MRI abnormal findings. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The aim of this study is to verify the hypothesis that free-floating particles could sometimes localize into the distal portion of the non ampullary arm of the posterior semicircular canal (PSC) so that assuming the Dix-Hallpike's positions, the clot could move towards the ampulla eliciting a inhibitory torsional-down beating paroxysmal positional nystagmus (PPNy), instead of typical excitatory torsional-up beating PPNy. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Examination revealed a 1–2 Hz down-beating nystagmus in primary gaze that worsened with left, right, and down gazes. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The bedside vestibular examination showed spontaneous down-beating stationary persistent, omni-positional nystagmus, not inhibited by fixation. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Of the 225 patients with vertical nystagmus, 163 were posterior semicircular canal BPPV (PSC-BPPV). Down-beating in the bowing position and no nystagmus in the leaning position (‘Down/–’) was the most common type (190 of 225 patients). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso