Essential constraints for detecting deep sources in EEG - application to orthostatic tremor

2011 ◽  
Author(s):  
M Muthuraman ◽  
G Deuschl ◽  
J Raethjen
Keyword(s):  
Orthostatic Tremor ◽  
Deep Sources

Orthostatic tremor: a cause of postural instability in the elderly

1990 ◽  
Vol 152 (7) ◽  
pp. 373-373 ◽  
Author(s):  
Peter Gates ◽  
Dominic Thyagarajan
Keyword(s):  
The Elderly ◽  
Postural Instability ◽  
Orthostatic Tremor

Video amplification as a sensitive screening tool for orthostatic tremor

2018 ◽  
Vol 46 ◽  
pp. e27
Author(s):  
J. Shou ◽  
D.E. Bhatti ◽  
R. Thompson ◽  
R. High ◽  
D.L. Murman ◽  
...  
Keyword(s):  
Screening Tool ◽  
Orthostatic Tremor

Primary orthostatic tremor associated with a persistent cerebrospinal fluid monoclonal IgG band

2003 ◽  
Vol 18 (3) ◽  
pp. 345-346 ◽  
Author(s):  
S. Anand Trip ◽  
Stephen J. Wroe
Keyword(s):  
Cerebrospinal Fluid ◽  
Orthostatic Tremor

scholarly journals Slow orthostatic tremor in multiple sclerosis

2009 ◽  
Vol 24 (10) ◽  
pp. 1550-1553 ◽  
Author(s):  
Mark Baker ◽  
Karen Fisher ◽  
Ming Lai ◽  
Martin Duddy ◽  
Stuart Baker
Keyword(s):  
Multiple Sclerosis ◽  
Orthostatic Tremor

Orthostatic tremor arises from an oscillator in the posterior fossa

2001 ◽  
Vol 16 (2) ◽  
pp. 272-279 ◽  
Author(s):  
Y.R. Wu ◽  
P. Ashby ◽  
A.E. Lang
Keyword(s):  
Posterior Fossa ◽  
Orthostatic Tremor

Orthostatic Tremor

2012 ◽  
pp. 219-233
Author(s):  
Julián Benito-León ◽  
Andrés Labiano-Fontcuberta ◽  
Elan D. Louis
Keyword(s):  
Orthostatic Tremor

scholarly journals Primary orthostatic tremor

BMJ ◽  
1995 ◽  
Vol 310 (6973) ◽  
pp. 143-144 ◽  
Author(s):  
T C Britton ◽  
P D Thompson
Keyword(s):  
Orthostatic Tremor

scholarly journals Diagnosis of orthostatic tremor using smartphone accelerometry

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Nicholas E. Calvo ◽  
Joseph M. Ferrara
Keyword(s):  
Movement Disorder ◽  
Surface Electromyography ◽  
Primary Outcome ◽  
Fear Of Falling ◽  
Spastic Paraplegia ◽  
Functional Movement ◽  
Orthostatic Tremor ◽  
Neurology Clinic ◽  
Low Amplitude ◽  
Larger Sample

Abstract Background Primary orthostatic tremor (OT) is a rare movement disorder characterized by a 13–18 Hz leg tremor, which arises when standing and is relieved by walking/sitting. Those affected generally do not fall, but experience fear of falling, lessened by ambulation. Because of its low amplitude, the tremor is not readily visible, and diagnosis requires confirmation with surface electromyography (sEMG). Recently, applications using the accelerometer feature of smartphones have been used to detect and quantify tremors, including OT, though the accuracy of smartphone accelerometry (SPA) in diagnosing OT is unknown. Methods We completed SPA in consecutive adults (18+ years), who presented to our neurology clinic with either subjective leg shakiness upon standing or unsteadiness when standing that lessened with ambulation, which comprised 59 of 2578 patients. We assessed tremor using the StudyMyTremor application on an iPhone 6 s adhered with tape to the patient’s tibialis anterior. Surface electromyography was completed on the same muscle. The primary outcome of this study was to determine SPA’s sensitivity and specificity in detecting OT compared with surface electromyography. Results Fifty-nine patients with the following diagnoses were included: OT (6), Parkinson’s disease, Hereditary Spastic Paraplegia, orthostatic hypotension, essential tremor, spinal cerebellar ataxia, sensory ataxia and functional movement disorder. Smartphone accelerometry detected a 13–18 Hz tremor in 5 of 6 patients diagnosed with OT by sEMG with no false positives in other conditions, yielding a sensitivity of 83%, specificity of 100% in the cohort we studied. Conclusions Though a larger sample size is desirable, preliminary data suggest that smartphone accelerometry is an alternative to surface electromyography in diagnosing OT.

scholarly journals Primary orthostatic tremor

2020 ◽  
Author(s):  
Keyword(s):  
Orthostatic Tremor

scholarly journals Complete Resolution of Symptoms of Primary Orthostatic Tremor with Perampanel

2018 ◽  
Vol 8 (0) ◽  
pp. 552 ◽  
Author(s):  
María Ruiz-Julián ◽  
Jorge Luís Orozco ◽  
Alexandre Gironell
Keyword(s):  
Complete Resolution ◽  
Orthostatic Tremor
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