Archive for Август 3rd, 2011

SEMG signal analysis at acupressure points for elbow movement

Дата: Август 3rd, 2011 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 4019
  • Название документа: SEMG signal analysis at acupressure points for elbow movement
  • Номер (DOI, IBSN, Патент): 10.1016/j.jelekin.2011.07.002
  • Изобретатель/автор: Ravinder Agarwal, Hardeep S. Ryait, A.S. Arora
  • Правопреемник/учебное заведение: Department of Electrical and Instrumentation Engg., Thapar University, Patiala, Punjab, India
  • Дата публикации документа: 2011-08-03
  • Страна опубликовавшая документ: Индия
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: http://www.sciencedirect.com/science/article/pii/S1050641111
  • Вложения: Нет
  • Аналитик: Helix

Surface electromyography signals (SEMG) are the most common form of non-invasive-measurement of muscle activities. To acquire proper SEMG for particular limb function, the placement of electrodes on the skin over respective active group of muscles becomes very important. Measurement of SEMG depends on a number of factors/parameters like amplitude, time and frequency domain properties. In the present investigation, analysis was carried firstly; to study the grip force vs. SEMG parameters at acupressure points on arm, using single channel approach. At all the selected acupressure points a linear increment of SEMG was observed. Secondly; to discriminate four elbow movements from different locations on arm using two channel approach with single parameter. The parameter for the analysis chosen was the root of mean of square (RMS) value of SEMG. Further; principal component analysis was used to verify the elbow movement discrimination. Extension and supination were the two operations which were observed to be easy to realize by prosthetic devices. The selection of these locations was done on the basis of acupressure points and anatomy of elbow. Matlab-softscope was used for acquiring the SEMG from line-in input port of PC-sound card. This study will also be helpful for the researchers in understanding the behavior of SEMG for elbow movement in development of prosthetic or exoskeleton devices.

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