Experimental study of human hand-arm model response

Hussein, Mohamed; As’arry, Azizan; Zain, Mohd; Mailah, Musa; Abdullah, Mohd Yunus

doi:10.1109/isma.2009.5164823

Cited by 14 publications

(10 citation statements)

References 11 publications

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“…The equation that relates this value with the other parameters is: (5) where x ST is the "Arm" static deflection and  is the external frequency applied to the system.…”

Section: "Arm" Isplacement Xpression D Ementioning

confidence: 99%

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A Self-Tunable Dynamic Vibration Absorber for Tremor Suppression

Teixeira

Bicho

Gago

et al. 2013

Biomedical Engineering

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We present a novel approach to Parkinson's Disease's (PD) tremor suppression based on a self-tunable Dynamic Vibration Absorber (DVA). The self-tuned DVA was designed, mathematically modeled, simulated and experimentally validated. For the experimental validation a wood beam, coupled to a vibration exciter, was used as an oscillating body. The control law for self-tuning was implemented and its effectiveness was investigated through experiments. Two types of input data were used to test the system performance. The first one was sinusoidal oscillations, where the input frequency could be varied; and the second a PD's waveform collected by sensors in patients and reproduced by the vibration exciter. The final self-tunable DVA system was able to suppress oscillations in the order of 98% and, maximum, 60%, respectively. This self-tunable DVA presents some biomedical advances and novelties. It has the ability to change its resonant frequency and better adapt itself to the patients inconstant tremor. Also, in a self-tunable DVA based on its mass, the components are lighter and smaller allowing clinical appliance in PD patients.

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“…The equation that relates this value with the other parameters is: (5) where x ST is the "Arm" static deflection and  is the external frequency applied to the system.…”

Section: "Arm" Isplacement Xpression D Ementioning

confidence: 99%

“…Parkinson's Disease (PD) is characterized for muscle rigidity, gait, lost of balance and tremor. This disease affects negatively the patient's life [1][2][3][4][5][6][7][8][9]. Possible treatments for PD include pharmalogic therapy, pallidotomy and deep brain stimulation [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Self-Tunable Dynamic Vibration Absorber for Tremor Suppression

Teixeira

Bicho

Gago

et al. 2013

Biomedical Engineering

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show abstract

“…To validate the device, the heuristic methods was used by adjusting two paramters of K1+K2, damping ratio of the two springs and m, representing a mass of the center core by refering (2). This two parameters need to adjust until the amplitude of acceleration in Fig.3 reached the minimum value near to zero.…”

Section: A Device Simulationmentioning

confidence: 99%

“…The involuntary movement for a healthy person (physiological tremor) should be small and clearly visible when a person encounters anxiety, furious, too cold and frightened. However, for a neurological diseases person, such as Parkinson's disease there is a significant uncontrollable hand tremor movement [2]. Tremor may be caused by smoking habits, taking caffeine, alcohol, using certain drugs and a people with a family history of movement disorder [3][4].…”

Section: Introductionmentioning

confidence: 99%

Performance of a passive device in improving tremor patients' handwriting capability

Yusop

Zain

Hussein

et al. 2012

2012 International Conference on Biomedical Engineering (ICoBE)

Self Cite

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This paper provides the investigation of the performance One-Degree-of-Freedom system to be implemented in tremors patient writing device to reduce human hand tremor. The One-Degree-of-Freedom of two springs and a mass is proposed to absorb the hand vibration for patients that suffered tremors disease while writing. The performance of development device is based on drawing Archimedes spiral that done by a tremor patient.

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“…Movement disorders cause patients with pathological tremor to have significant uncontrollable hand tremor movement [5] [6]. Pathological tremor tends to have constant frequency with small variations [7].…”

Section: Introductionmentioning

confidence: 99%

Parkinson’s Disease Treatment as Seen from a Mechanical Point of View

Gebai¹,

Hammoud²

2016

APD

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Tremor is considered as the most common faced abnormal involuntary movement disorder and the source of functional disability. Parkinson disease (PD) is a slowly progressive degenerative disorder of the central nervous system caused by the lack in the level of dopamine. Levodopa is the most effective dopaminergic medication used to manage Parkinson symptoms. However, it will be the source of the motor fluctuation after several years. An uncommon type of medication is suggested to suppress the resting tremor of PD patients. In this paper, a vibration absorber is used as a mechanical treatment and designed to reduce critical angular displacement amplitude at the resonance frequency. Human hand is modeled dynamically at the musculoskeletal level to reflect Parkinsonism. Motion is considered due to shoulder, elbow, Biceps brachii and wrist muscles activation. Absorber's geometry, materials properties and parameters are well chosen to satisfy the tuning condition. The solution to the equation of motion for the hand is shown in the frequency and time domains to check the performance of the absorber in reducing the flexion angular motion at the wrist joint. Results show that the absorber was very effective over a good frequency bandwidth. It was able to reduce 93% of tremors amplitude at the wrist joint in the frequency domain. This type of absorber has low cost, can operate without power requirements, and has a simple design. Since its effectiveness was proved when tested numerically, it is recommended to proceed to the manufacturing process and the experimental study.

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Experimental study of human hand-arm model response

Cited by 14 publications

References 11 publications

A Self-Tunable Dynamic Vibration Absorber for Tremor Suppression

A Self-Tunable Dynamic Vibration Absorber for Tremor Suppression

Performance of a passive device in improving tremor patients' handwriting capability

Parkinson’s Disease Treatment as Seen from a Mechanical Point of View

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