Positional Downbeat Nystagmus

2019 ◽  
pp. 191-201 ◽  
Author(s):  
Jeong-Yoon Choi ◽  
Ji-Soo Kim
Keyword(s):  
Downbeat Nystagmus

Effect of 4-Aminopyridine on Upbeat and Downbeat Nystagmus Elucidates the Mechanism of Downbeat Nystagmus

2004 ◽  
Vol 35 (03) ◽  
Author(s):  
R Kalla ◽  
S Glasauer ◽  
M Strupp ◽  
U Büttner ◽  
T Brandt
Keyword(s):  
Downbeat Nystagmus

Hypometabolism in cerebellar tonsil and flocculus regions during downbeat nystagmus

2005 ◽  
Vol 32 (S 4) ◽  
Author(s):  
P Schlindwein ◽  
C Best ◽  
S Bense ◽  
H.G Buchholz ◽  
T Siessmeier ◽  
...  
Keyword(s):  
Cerebellar Tonsil ◽  
Downbeat Nystagmus

Treatment of the gravity-dependence of downbeat nystagmus with 3,4-diaminopyridine

2006 ◽  
Vol 33 (S 1) ◽  
Author(s):  
A. Sprenger ◽  
H. Rambold ◽  
T. Sander ◽  
S. Marti ◽  
K. Weber ◽  
...  
Keyword(s):  
Downbeat Nystagmus

Downbeat Nystagmus Associated with Intravenous Patient-Controlled Administration of Morphine

2000 ◽  
Vol 91 (3) ◽  
pp. 691-692 ◽  
Author(s):  
Robert D. Henderson ◽  
Eelco F. M. Wijdicks
Keyword(s):  
Downbeat Nystagmus

scholarly journals Therapy-Resistant Atypical Downbeat Nystagmus with Vertigo Confined to Specific Head-Hanging Positions: Mapping to the Gravity Vector on a Multi-Axis Turntable

2021 ◽  
pp. 464-469
Author(s):  
Dominik Péus ◽  
Dominik Straumann ◽  
Alexander Huber ◽  
Christopher J. Bockisch ◽  
Vincent Wettstein
Keyword(s):  
Hair Cells ◽  
Whole Body ◽  
Downbeat Nystagmus ◽  
Two Dimensional ◽  
Body Rotation ◽  
Therapeutic Approaches ◽  
Atypical Case ◽  
Anterior Semicircular Canal ◽  
Head Positions ◽  
Peripheral Origin

Downbeat nystagmus (DBN) observed in head-hanging positions, may be of central or peripheral origin. Central DBN in head-hanging positions is mostly due to a disorder of the vestibulo-cerebellum, whereas peripheral DBN is usually attributed to canalolithiasis of an anterior semicircular canal. Here, we describe an atypical case of a patient who, after head trauma, experienced severe and stereotypic vertigo attacks after being placed in various head-hanging positions. Vertigo lasted 10–15 s and was always associated with a robust DBN. The provocation of transient vertigo and DBN, which both showed no decrease upon repetition of maneuvers, depended on the yaw orientation relative to the trunk and the angle of backward pitch. On a motorized, multi-axis turntable, we identified the two-dimensional Helmholtz coordinates of head positions at which vertigo and DBN occurred (<i>y</i>-axis: horizontal, space-fixed; <i>z</i>-axis: vertical, and head-fixed; <i>x</i>-axis: torsional, head-fixed, and unchanged). This two-dimensional area of DBN-associated head positions did not change when whole-body rotations took different paths (e.g., by forwarding pitch) or were executed with different velocities. Moreover, the intensity of DBN was also independent of whole-body rotation paths and velocities. So far, therapeutic approaches with repeated liberation maneuvers and cranial vibrations were not successful. We speculate that vertigo and DBN in this patient are due to macular damage, possibly an unstable otolithic membrane that, in specific orientations relative to gravity, slips into a position causing paroxysmal stimulation or inhibition of macular hair cells.

scholarly journals Downbeat Nystagmus Combined with Flutter Like Oscillation in a Case of Localized Encephalitis

1991 ◽  
Vol 1991 (Supplement42) ◽  
pp. 56-66 ◽  
Author(s):  
Satoshi Yoshio ◽  
Koji Tokumasu ◽  
Akito Fujino ◽  
Hideaki Naganuma ◽  
Kentaro Nitta ◽  
...  
Keyword(s):  
Downbeat Nystagmus

Dalfampridine in patients with downbeat nystagmus—an observational study

2013 ◽  
Vol 260 (8) ◽  
pp. 1992-1996 ◽  
Author(s):  
Jens Claassen ◽  
Katharina Feil ◽  
Stanislav Bardins ◽  
Julian Teufel ◽  
Rainer Spiegel ◽  
...  
Keyword(s):  
Observational Study ◽  
Downbeat Nystagmus

Paraneoplastic downbeat nystagmus associated with cerebellar hypermetabolism especially in the nodulus

2014 ◽  
Vol 343 (1-2) ◽  
pp. 187-191 ◽  
Author(s):  
Seo Young Choi ◽  
Seong-Ho Park ◽  
Hyo-Jung Kim ◽  
Ji-Soo Kim
Keyword(s):  
Downbeat Nystagmus

scholarly journals Upbeat and downbeat nystagmus occurring successively in a patient with posterior medullary haemorrhage.

1991 ◽  
Vol 54 (4) ◽  
pp. 367-369 ◽  
Author(s):  
M Rousseaux ◽  
T Dupard ◽  
F Lesoin ◽  
P Barbaste ◽  
J C Hache
Keyword(s):  
Downbeat Nystagmus

Ictal downbeat nystagmus in bilateral Meniere’s disease

2017 ◽  
Vol 264 (9) ◽  
pp. 2024-2026 ◽  
Author(s):  
Sun-Uk Lee ◽  
Hyo-Jung Kim ◽  
Eek-Sung Lee ◽  
Jeong-Yoon Choi ◽  
Ji-Soo Kim
Keyword(s):  
Meniere’S Disease ◽  
Menière’S Disease ◽  
Meniere's Disease ◽  
Downbeat Nystagmus ◽  
Ménière’S Disease ◽  
Menière's Disease ◽  
Ménière's Disease
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