scholarly journals Re-Emergent Kinetic Tremor in Parkinson’s Disease

2019 ◽  
Vol 9 (0) ◽  
Author(s):  
Harsh V. Gupta
2000 ◽  
Vol 15 (6) ◽  
pp. 1084-1094 ◽  
Author(s):  
R. Wenzelburger ◽  
J. Raethjen ◽  
K. L�ffler ◽  
H. Stolze ◽  
M. Illert ◽  
...  

Author(s):  
Ligita Smeltere ◽  
Elvīra Smeltere

Abstract Essential tremor (ET) is a common movement disorder, characterised by symptoms such as bilateral postural and kinetic tremor with prevalent manifestation in hands. The disease has chronic progressive development. In the case of continuous severe form it may resemble Parkinson’s disease (PD) and sometimes comorbidity with PD is possible. Although both diseases have different pathogenesis and treatment, some tremor characteristics for both are similar, thus causing difficulties and mistakes in diagnosing. The aim of the research was to determine ET characteristics within the Latvian population to identify possible causes for making mistakes.


2016 ◽  
Vol 22 ◽  
pp. e24 ◽  
Author(s):  
Stanislaw Szlufik ◽  
Mateusz Szumilas ◽  
Justyna Dutkiewicz ◽  
Dariusz Koziorowski ◽  
Tomasz Mandat ◽  
...  

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 184
Author(s):  
Mateusz Szumilas ◽  
Krzysztof Lewenstein ◽  
Elżbieta Ślubowska ◽  
Stanisław Szlufik ◽  
Dariusz Koziorowski

Parkinson’s disease results in motor impairment that deteriorates patients’ quality of life. One of the symptoms negatively interfering with daily activities is kinetic tremor which should be measured to monitor the outcome of therapy. A new instrumented method of quantification of the kinetic tremor is proposed, based on the analysis of circles drawn on a digitizing tablet by a patient. The aim of this approach is to obtain a tremor scoring equivalent to that performed by trained clinicians. Models are trained with the least absolute shrinkage and selection operator (LASSO) method to predict the tremor scores on the basis of the parameters computed from the patients’ drawings. Signal parametrization is derived from both expert knowledge and the response of an artificial neural network to the raw data, thus the approach was named multimodal. The fitted models are eventually combined into model ensembles that provide aggregated scores of the kinetic tremor captured in the drawings. The method was verified with a set of clinical data acquired from 64 Parkinson’s disease patients. Automated and objective quantification of the kinetic tremor with the presented approach yielded promising results, as the Pearson’s correlations between the visual ratings of tremor and the model predictions ranged from 0.839 to 0.890 in the best-performing models.


Author(s):  
Tamara Kaplan ◽  
Tracey Milligan

The video in this chapter explores movement disorders, and focuses on Tourette’s Syndrome, Essential tremor, and Parkinson’s Disease. It outlines the characteristics of each, such as motor and vocal tics in Tourette’s Syndrome, postural or kinetic tremor in Essential tremor, and the four hallmark features of Parkinson’s Disease (bradykinesia, resting tremor, cogwheel rigidity, and postural instability).


2016 ◽  
Vol 22 ◽  
pp. e109-e110
Author(s):  
Stanislaw Szlufik ◽  
Mateusz Szumilas ◽  
Justyna Dutkiewicz ◽  
Dariusz Koziorowski ◽  
Tomasz Mandat ◽  
...  

2014 ◽  
Vol 72 (4) ◽  
pp. 301-306 ◽  
Author(s):  
Ederson Cichaczewski ◽  
Renato P. Munhoz ◽  
Joaquim M. Maia ◽  
Percy Nohama ◽  
Edison M. Nóvak ◽  
...  

Tremor in essential tremor (ET) and Parkinson’s disease (PD) usually present specific electrophysiologic profiles, however amplitude and frequency may have wide variations. Objective: To present the electrophysiologic findings in PD and ET. Method: Patients were assessed at rest, with posture and action. Seventeen patients with ET and 62 with PD were included. PD cases were clustered into three groups: predominant rest tremor; tremor with similar intensity at rest, posture and during kinetic task; and predominant kinetic tremor. Results: Patients with PD presented tremors with average frequency of 5.29±1.18 Hz at rest, 5.79±1.39 Hz with posture and 6.48±1.34 Hz with the kinetic task. Tremor in ET presented with an average frequency of 5.97±1.1 Hz at rest, 6.18±1 Hz with posture and 6.53±1.2 Hz with kinetic task. Seven (41.2%) also showed rest tremor. Conclusion: The tremor analysis alone using the methodology described here, is not sufficient to differentiate tremor in ET and PD.


Author(s):  
Robertus M. A. de Bie

Essential tremor is defined as long-standing bilateral hand/arm tremor that is visible and may occur persistently during posture-holding, simple movements, and action. The tremor may be slightly asymmetrical. Other areas of the body that may be affected are head and neck (most frequently), the voice, and legs. Head tremor without limb tremor is accepted as essential tremor, although this definition remains controversial. Essential tremor is a progressive disease and manifests at any age. Tremor in Parkinson’s disease mostly starts unilaterally. A no–no or yes–yes tremor of the head indicates essential tremor, whereas a tremor of the jaw or tongue fits with Parkinson’s disease. The cogwheel phenomenon may also occur in patients with essential tremor. Toxins and medications as the cause for postural/kinetic tremor must be ruled out. Pharmacological options for essential tremor can be unsatisfactory.


2006 ◽  
Vol 113 (7) ◽  
pp. 845-853 ◽  
Author(s):  
P. H. Kraus ◽  
M. R. Lemke ◽  
H. Reichmann

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