eLearning

The effect and reaction of information presentation in surveillance services

Mitsunari Uozumi; Kouichi Yamada; Shuto Murai; Hajime Asama; Kaoru Takakusaki The SICE Annual Conference 2013, 2013

Surveillance services are passive work. The surveillance operators are continuously waiting for an alarm. By adding active work to waiting time, the alarm process and disposal time of surveillance operator becomes short. We built a simulated environment of surveillance, and compared physiological reaction of subjects whose experiences were different. As a result, alarm disposal time is shortened in cases where ...

Towards Design of a Stumble Detection System for Artificial Legs

Fan Zhang; Susan E. D'Andrea; Michael J. Nunnery; Steven M. Kay; He Huang IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2011

Recent advances in design of powered artificial legs have led to increased potential to allow lower limb amputees to actively recover from stumbles. To achieve this goal, promptly and accurately identifying stumbles is essential. This study aimed to 1) select potential stumble detection data sources that react reliably and quickly to stumbles and can be measured from a prosthesis, and ...

A simple tool to measure spasticity in spinal cord injury subjects

Arash Arami; Nevio L. Tagliamonte; Federica Tamburella; Hsieng-Yung Huang; Marco Molinari; Etienne Burdet 2017 International Conference on Rehabilitation Robotics (ICORR), 2017

This work presents a wearable device and the algorithms for quantitative modelling of joint spasticity and its application in a pilot group of subjects with different levels of spinal cord injury. The device comprises light-weight instrumented handles to measure the interaction force between the subject and the physical therapist performing the tests, EMG sensors and inertial measurement units to measure ...

Power line interference attenuation in multi-channel sEMG signals: Algorithms and analysis

S. D. H. Soedirdjo; K. Ullah; R. Merletti 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015

Electromyogram (EMG) recordings are often corrupted by power line interference (PLI) even though the skin is prepared and well-designed instruments are used. This study focuses on the analysis of some of the recent and classical existing digital signal processing approaches have been used to attenuate, if not eliminate, the power line interference from EMG signals. A comparison of the signal ...

Elimination of ECG Artifacts from Myoelectric Prosthesis Control Signals Developed by Targeted Muscle Reinnervation

Ping Zhou; M. M. Lowery; R. F. Weir; T. A. Kuiken 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005

We investigated elimination of electrocardiogram (ECG) artifacts from the myoelectric prosthesis control signals, taken from the reinnervated pectoralis muscles of a patient with bilateral amputations at shoulder disarticulation level. The performance of various ECG artifact removal methods including high pass filtering, spike clipping, template subtracting, wavelet thresholding and adaptive filtering was presented. In particular, considering the clinical requirements and memory ...

IEEE-USA E-Books

• Index

  No abstract.

• Biofeedback Applications

  This chapter contains sections titled: Introduction Biofeedback Application to Impairment Syndromes SEMG Biofeedback Techniques Summary References

• Control of Powered Upper Limb Prostheses

  This chapter contains sections titled: Introduction Myoelectric Signal as a Control Input Conventional Myoelectric Control Emerging MEC Strategies Summary References

• Surface EMG Applications in Neurophysiology

  This chapter focuses on the basics of surface electromyography (sEMG) and related methods for the study of human motor control and its adaptations. Recordings of voluntary sEMG provide partial information on the mechanisms involved in muscle activity. However, the combination of sEMG and methods based on electrically and magnetically evoked potentials allows stepping further in a comprehensive approach of movement strategies during tasks, and the influence of various factors such as etiology of cramps, fatigue, training, aging on such strategies. The recorded sEMG signal represents the electrical activity of numerous motor units. The chapter describes the basic methodology to record H-reflex and the relevant factors to consider when assessing its modulations. sEMG and evoked potentials provide relevant information on age-related changes within the muscle and the nervous system, as well as on the neural adjustments required to perform various motor tasks.

• EMG Modeling and Simulation

  This chapter contains sections titled: Introduction Phenomenological Models of EMG Elements of Structure-Based SEMG Models Basic Assumptions Elementary Sources of Bioelectric Muscle Activity Fiber Membrane Activity Profiles, Their Generation, Propagation, and Extinction Structure of the Motor Unit Volume Conduction Modeling EMG Detection Systems Modeling Motor Unit Recruitment and Firing Behavior Inverse Modeling Modeling of Muscle Fatigue Other Applications of Modeling Conclusions References

• Needle and Wire Detection Techniques

  This chapter contains sections titled: Anatomical and Physiological Background of Intramuscular Recording Recording Characteristics of Needle Electrodes Conventional Needle EMG Special Needle Recording Techniques Physical Characteristics of Needle EMG Signals Recording Equipment References

• EMG and Posture in Its Narrowest Sense

  Surface electromyography (sEMG) has been used to identify which muscles could possibly have a significant postural role. Typically, such postural role is inspected by recording surface EMGs from different muscles when subjects sustain their body in different postures. The activation of different skeletal muscles can be well characterized for a specific posture. This chapter deals with electromyographic studies of the human standing posture. Some perturbations might be designed to reveal what happens in quiet standing. These perturbations have magnitude and bandwidth comparable to that of the spontaneous sways occurring in standing. The chapter highlights some standing- like-perturbation protocols that have been considered to investigate key aspects of the system controlling the human standing posture. It provides recent insights into the physiological interpretation of surface EMGs recorded from the pinnate gastrocnemius muscle during quiet standing. The chapter also outlines the high-density surface EMG (HDsEMG).

• Surface Mechanomyogram

  This chapter contains sections titled: The Mechanomyogram (MMG): General Aspects during Stimulated and Voluntary Contraction Detection Techniques and Sensors Comparison Comparison between Different Detectors Simulation MMG Versus Force: Joint and Adjunct Information Content MMG Versus EMG: Joint and Adjunct Information Content Area of Application References

• EMG in Exercise Physiology and Sports

  Surface electromyography (sEMG) is useful in studying many issues of motor control. This chapter analyzes the issues of coactivation, onset muscle timing, and characterization of exercise under the viewpoint of muscle coordination. Surface EMG has been widely used to study muscle coordination during locomotion such as walking, running, and cycling. The pattern of muscle activation during locomotion can be analyzed in terms of activity level and/or activation timing. A motor unit (MU) consists of a motoneuron in the spinal cord and the muscle fibers it innervates. The electrical activity in a muscle is determined by the number of motor units recruited and their mean discharge frequency of excitation, that is, the same factors that determine muscle force. The chapter investigates the physiological effects of static stretching upon delayed-onset muscle soreness (DOMS) in conjunction with the spinal alpha motoneuron pool excitability.

• Applications in Movement and Gait Analysis

  This chapter contains sections titled: Relevance of Electromyography in Kinesiology Typical Acquisition Settings Study of Motor Control Strategies Investigation on the Mechanical Effect of Muscle Contraction Gait Analysis Identification of Pathophysiologic Factors Workload Assessment in Occupational Biomechanics Biofeedback The Linear Envelope Information Enhancement through Multifactorial Analysis References