نتایج جستجو برای: emg 7

تعداد نتایج: 652795  

2009
Xiao Hu Ying Gao Wai-Xi Liu

This paper introduced a novel, simple and effective method to extract the general feature of two surface EMG (electromyography) signal patterns: forearm supination (FS) surface EMG signal and forearm pronation (FP) surface EMG signal. After surface EMG (SEMG) signal was decomposed to the fourth resolution level with wavelet packet transform (WPT), its whole scaling space (with frequencies in th...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2001
C J Jou J P Farber C Qin R D Foreman

The present study used a rat model in which algogenic chemicals were infused into the pericardial sac to evoke spasmlike contractions in paraspinal muscles. The following techniques were used to study the roles of sympathetic (SCA) and vagal cardiac afferents (VCA) in electromyographic (EMG) responses to pericardial algogenic chemicals: chemical stimulation, electrical stimulation, and nerve tr...

پایان نامه :0 1367

وجود هزاران معلول و عدم کفایت اندامهای مصنوعی موجود در ایران و نیاز مبرم تیم پژوهشی دست سیبرنتیکی دانشگاه امیرکبیر ضرورت انجام پروژه را مشخص می نما چون اطلاعات ارادی برای انجام حرکت در دست مصنوعی موجود از طریق سیگنال emg استخراج می شود، لذا نقاط و چگونگی برداشت اطلاعات حائز اهمیت میباشد. به این ترتیب هدف از اجرای پروژه فوق پیدا نمودن مشخصات آماری سری زمان یا طیف فرکانسی سیگنال emg روی سطح عضله ...

2012
Chantale Dumoulin

Start End Topic Speakers 14:00 14:10 Introduction  Chantale Dumoulin 14:10 14:35 Digital evaluation  Chantale Dumoulin 14:35 14:40 Questions All 14:40 14:55 Manometry  Mélanie Morin 14:55 15:00 Questions All 15:00 15:20 EMG  Petra Voorham van der Zalm 15:20 15:30 Questions All 15:30 16:00 Break None 16:00 16:20 Dynamometry  Mélanie Morin 16:20 16:30 Questions All 16:30 16:50 US  Jenny Kru...

Journal: :BMC Musculoskeletal Disorders 2005
Nathaly Gaudreault A Bertrand Arsenault Christian Larivière Sophie J DeSerres Charles-Hilaire Rivard

BACKGROUND It is known that the back muscles of scoliotic subjects present abnormalities in their fiber type composition. Some researchers have hypothesized that abnormal fiber composition can lead to paraspinal muscle dysfunction such as poor neuromuscular efficiency and muscle fatigue. EMG parameters were used to evaluate these impairments. The purpose of the present study was to examine the ...

2011
Jaime Gómez Gil Israel San-Jose-Gonzalez Luis F. Nicolás-Alonso Sergio Alonso-García

An electromiographic (EMG)-based human-machine interface (HMI) is a communication pathway between a human and a machine that operates by means of the acquisition and processing of EMG signals. This article explores the use of EMG-based HMIs in the steering of farm tractors. An EPOC, a low-cost human-computer interface (HCI) from the Emotiv Company, was employed. This device, by means of 14 sali...

ژورنال: ارگونومی 2020

Background and Aims: The purpose of this study was to compare the efficacy and usability of human-computer interface in cervical spinal cord injury with two computer games based and EMG biofeedback. Methods: The sample size was 20 participants (healthy and spinal cervical lesions) who were selected as available. The statistical population of the study was spinal cord injury patients referred t...

Journal: :Neurorehabilitation and neural repair 2016
Gert Kwakkel Caroline Winters Erwin E H van Wegen Rinske H M Nijland Annette A A van Kuijk Anne Visser-Meily Jurriaan de Groot Erwin de Vlugt J Hans Arendzen Alexander C H Geurts Carel G M Meskers

Background and Objective Favorable prognosis of the upper limb depends on preservation or return of voluntary finger extension (FE) early after stroke. The present study aimed to determine the effects of modified constraint-induced movement therapy (mCIMT) and electromyography-triggered neuromuscular stimulation (EMG-NMS) on upper limb capacity early poststroke. Methods A total of 159 ischemic ...

Journal: :International journal of psychophysiology : official journal of the International Organization of Psychophysiology 2012
Boris Bornemann Piotr Winkielman Elke van der Meer

Briefly presented (e.g., 10 ms) emotional stimuli (e.g., angry faces) can influence behavior and physiology. Yet, they are difficult to identify in an emotion detection task. The current study investigated whether identification can be improved by focusing participants on their internal reactions. In addition, we tested how variations in presentation parameters and expression type influence ide...

Journal: :Journal of neurophysiology 2008
Torsten Eken Geoffrey C B Elder Terje Lømo

Tonic firing behavior in soleus muscle of unrestrained rats aged 7 to >or=100 days was studied by chronic single-motor-unit and gross-electromyographic (EMG) recordings. Median motor-unit firing frequency at 10 days was 19-26 Hz and did not change appreciably after this time, whereas interval-to-interval firing variability was reduced with age. Two units with median frequencies 40 and 59 Hz wer...

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