Development of a System for Measurement and Analysis of Tremor Using a Three-axis Accelerometer

Mamorita, Noritaka; Iizuka, Tomoki; Takeuchi, Akihiro; Shirataka, M.; Ikeda, Noriaki

doi:10.3414/me9243

Cited by 41 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the past, our group has investigated the relationship between the angular acceleration of the ankle joint and knee joints and the physical function of community-dwelling elderly subjects using a gyro sensor 20,21) . In addition, we have investigated a system for evaluating the symptoms of patients with Parkinson's disease tremors using smartphones and game controllers with built-in accelerometers 22) . In this study, we developed an application using the built-in sensors of the iPod touch, and evaluated the reliability validity of the kinematic analysis of trunk and pelvis movements during walking and standing using the iPod touch and software we developed for it.…”

Section: Discussionmentioning

confidence: 99%

Validity and Reliability of the Kinematic Analysis of Trunk and Pelvis Movements Measured by Smartphones during Walking

et al. 2013

View full text Add to dashboard Cite

Abstract.[Purpose] The purpose of this study was to investigate the reliability and validity of the kinematic analysis of trunk and pelvis movement during gait and standing as measured by two smartphones (in the present study, we used iPod touches because of their weight).[Methods] Thirty-eight healthy adults (mean age, 21.4 ± 1.2 years) were instructed to stand and walk on a treadmill at three different speeds. The tilt angle of the trunk and pelvis were measured using both an iPod touch and an optoelectronic motion capture system (Optotrak).[Results] The error between the iPod touch and Optotrak was small during standing and walking at low speed. However, as the walking speed was increased, the error between the iPod touch and Optotrak increased. There were no significant differences between the test and retest measurement values of each device, nor were there any significant differences between the days of the analyses.[Conclusions] The iPod touch has good accuracy, since the variations in the test and retest and for different days were small. This suggests that the iPod touch can be used instead of the Optotrak for the kinematic analysis of trunk and pelvis movement at low walking speeds.

show abstract

Section: Discussionmentioning

confidence: 99%

Validity and Reliability of the Kinematic Analysis of Trunk and Pelvis Movements Measured by Smartphones during Walking

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Yet, some researches have been made (including in Romania) in order to early diagnose the PD and its progress by means of the tremor or the gait analysis or other symptoms [29]- [34]. The tremor time series were acquired using an accelerometer sensor from a W ii T M console [35], connected via Bluetooth to a PC.…”

Section: Tremor Recodingmentioning

confidence: 99%

“…The accelerometer built into W ii T M Remote (Nintendo) measures gravitational and non-gravitational acceleration. The results of this paper suggest that Nintendo is useful for measurement and analysis of tremor using the methodologies described in [28], [29], [31]. We defined the following linguistic variables (for instance for X axis):…”

Section: Tremor Recodingmentioning

confidence: 99%

Parkinson’s Disease Prediction Based on Multistate Markov Models

Costin

Geman

2013

INT J COMPUT COMMUN

View full text Add to dashboard Cite

In the real medical world, there are many symptoms or chronic diseases that cannot be characterized in a deterministic way, and which must be examined in a random way. In the study of these stochastic processes, Markov chains are used. There is a wide variety of phenomena that suggest a behavior in a Markov process manner such as: the probability that a patient's health to improve, to get worse, to remain stable or to progress to death within a certain time slot, depending on what happened in the previous time window. Our goal is to show that the Markov chains can be applied to the patients with Parkinson's disease in order to predict the evolution of the disease over time. So the doctor may decide a therapeutic solution that is adapted to the patient's needs, and that can improve the quality of the patient's life with Parkinson's disease in terminal stage.

show abstract

“…In a study with PD patients using electromyography, tremor amplitude and burst duration increased, whereas frequency decreased with longer disease duration (Milanov 2002). The first results with acceptable accuracy in detecting the severity of resting tremor using tri-axial accelerometers have been published (Mamorita et al 2009; Rigas et al 2009; Schlesinger et al 2009). …”

Section: Clinical Biomarker Candidatesmentioning

confidence: 99%

Biomarker candidates of neurodegeneration in Parkinson’s disease for the evaluation of disease-modifying therapeutics

et al. 2011

View full text Add to dashboard Cite

Reliable biomarkers that can be used for early diagnosis and tracking disease progression are the cornerstone of the development of disease-modifying treatments for Parkinson’s disease (PD). The German Society of Experimental and Clinical Neurotherapeutics (GESENT) has convened a Working Group to review the current status of proposed biomarkers of neurodegeneration according to the following criteria and to develop a consensus statement on biomarker candidates for evaluation of disease-modifying therapeutics in PD. The criteria proposed are that the biomarker should be linked to fundamental features of PD neuropathology and mechanisms underlying neurodegeneration in PD, should be correlated to disease progression assessed by clinical rating scales, should monitor the actual disease status, should be pre-clinically validated, and confirmed by at least two independent studies conducted by qualified investigators with the results published in peer-reviewed journals. To date, available data have not yet revealed one reliable biomarker to detect early neurodegeneration in PD and to detect and monitor effects of drug candidates on the disease process, but some promising biomarker candidates, such as antibodies against neuromelanin, pathological forms of α-synuclein, DJ-1, and patterns of gene expression, metabolomic and protein profiling exist. Almost all of the biomarker candidates were not investigated in relation to effects of treatment, validated in experimental models of PD and confirmed in independent studies.

show abstract

Development of a System for Measurement and Analysis of Tremor Using a Three-axis Accelerometer

Abstract: This system using a Wii Remote is capable of analyzing frequency and estimated amplitude of tremor between 3 Hz and 15 Hz.

Cited by 41 publications

References 25 publications

Validity and Reliability of the Kinematic Analysis of Trunk and Pelvis Movements Measured by Smartphones during Walking

Validity and Reliability of the Kinematic Analysis of Trunk and Pelvis Movements Measured by Smartphones during Walking

Parkinson’s Disease Prediction Based on Multistate Markov Models

Biomarker candidates of neurodegeneration in Parkinson’s disease for the evaluation of disease-modifying therapeutics

Contact Info

Product

Resources

About