Distribution of tremor among the major degrees of freedom of the upper limb in subjects with Essential Tremor

Pigg, Adam C.; Thompson-Westra, Johanna; Mente, Karin; Maurer, Carine W.; Haubenberger, Dietrich; Hallett, Mark; Charles, Steven K.

doi:10.1016/j.clinph.2020.08.010

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…Although the reasoning is not detailed in the publications by Kim et al . and Isaacson et al, this sensor placement may be justified by the finding that tremor frequency is similar in all joints of the upper limb in an individual patient [ 18 ], [ 37 ], [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

“…Theoretically, the placement of these sensors should allow for measurement of the tremor at the joint moved by the muscles or equivalent nerves which the stimulation is applied to; however, in the two identified wearable devices for sensory stimulation, a single sensor was used to determine the tremor characteristics at the forearm only, whereas the nerves being modulated would move the wrist. Although the reasoning is not detailed in the publications by Kim et al and Isaacson et al, this sensor placement may be justified by the finding that tremor frequency is similar in all joints of the upper limb in an individual patient [18,38,54].…”

Section: Discussionmentioning

confidence: 99%

“…used motion capture sensors to characterize tremor in the 7 main degrees of freedom in the upper limb of 22 essential tremor patients, finding that the degrees of freedom with the greatest amount of tremor are wrist flexion/extension and forearm pronation/supination. A secondary finding of the study is that no difference in the frequency of tremor was observed between different degrees of freedom in each subject [ 37 ].…”

Section: Pathophysiology Of Essential Tremormentioning

confidence: 99%

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Wearable Peripheral Electrical Stimulation Devices for the Reduction of Essential Tremor: A Review

2021

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Essential tremor is the most common pathological tremor, with a prevalence of 6.3% in people over 65 years of age. This disorder interferes with a patient’s ability to carry out activities of daily living independently, and treatment with medical and surgical interventions is often insufficient or contraindicated. Mechanical orthoses have not been widely adopted by patients due to discomfort and lack of discretion. Over the past 30 years, peripheral electrical stimulation has been investigated as a possible treatment for patients who have not found other treatment options to be satisfactory, with wearable devices revolutionizing this emerging approach in recent years. In this paper, an overview of essential tremor and its current medical and surgical treatment options are presented. Following this, tremor detection, measurement and characterization methods are explored with a focus on the measurement options that can be incorporated into wearable devices. Then, novel interventions for essential tremor are described, with a detailed review of open and closed-loop peripheral electrical stimulation methods. Finally, discussion of the need for wearable closed-loop peripheral electrical stimulation devices for essential tremor, approaches in their implementation, and gaps in the literature for further research are presented.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Pathophysiology Of Essential Tremormentioning

confidence: 99%

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Wearable Peripheral Electrical Stimulation Devices for the Reduction of Essential Tremor: A Review

2021

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“…In a study of 11 PD and 10 ET cases, the postural tremor amplitude in PD cases was reported to be 2.7 times larger than that in ET cases on average [13]. Different studies on ET have shown that forearm rotation and wrist flexion/extension tremors are the most severe kinetic tremors [14]. Different DOFs have almost the same distribution order as posture tremors, except for the forearm rotation tremor that has smaller power than wrist flexion/extension [15].…”

Section: Introductionmentioning

confidence: 96%

4D printing of soft orthoses for tremor suppression

et al. 2022

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Tremor is an involuntary and oscillatory movement disorder that makes daily activities difficult for affected patients. Hand tremor-suppression orthoses are noninvasive, wearable devices designed to mitigate tremors. Various studies have shown that these devices are effective, economical, and safe; however, they have drawbacks such as large weight, awkward shape, and rigid parts. This study investigates different types of tremor-suppression orthoses and discusses their efficiency, mechanism, benefits, and disadvantages. First, various orthoses (with passive, semi-active, and active mechanisms) are described in detail. Next, we look at how additive manufacturing (AM) has progressed recently in making sensors and actuators for application in tremor orthoses. Then, the materials used in AM are further analyzed. It is found that traditional manufacturing problems can be solved with the help of AM techniques, like making orthoses that are affordable, lighter, and more customizable. Another concept being discussed is using smart materials and AM methods, such as four-dimensional (4D) printing, to make orthoses that are more comfortable and efficient. Graphic abstract

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“…Among different types of pathological tremor, ET is the most common tremor disease, affecting 4% of people aged over 50 [14]. ET is characterized by postural tremor that occurs whilst maintaining a limb position against gravity [15] and kinetic tremor that occurs when a body part is moving [16], [17]. Although pharmacotherapy and deep brain stimulation surgery are the most common and effective treatments for pathological tremor, these approaches have several limitations and they are not always effective [18].…”

Section: Introductionmentioning

confidence: 99%

Online Tracking of the Phase Difference Between Neural Drives to Antagonist Muscle Pairs in Essential Tremor Patients

Puttaraksa

Muceli

Barsakcioglu

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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Distribution of tremor among the major degrees of freedom of the upper limb in subjects with Essential Tremor

Cited by 10 publications

References 39 publications

Wearable Peripheral Electrical Stimulation Devices for the Reduction of Essential Tremor: A Review

Wearable Peripheral Electrical Stimulation Devices for the Reduction of Essential Tremor: A Review

4D printing of soft orthoses for tremor suppression

Online Tracking of the Phase Difference Between Neural Drives to Antagonist Muscle Pairs in Essential Tremor Patients

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