پاورپوینت الکترو میو گرافی (pptx) 59 اسلاید

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به نام خداوند جان و خرد کزین برتر اندیشه برنگذرد  EMG( ELECTROMYOGRAPHY) فهرست مطالب تعریفemg نحوه تشکیل سیگنال آشنایی با اجزاء تشکیل دهنده دستگاه emg انواع دستگاههایemg انواع الکترودها محل قرار دادن الکترودها در بدن کاربرد emg در ارگونومی What is an electromyogram? An electromyogram (EMG) is a test that is used to record the electrical activity of muscles. When muscles are active, they produce an electrical current. This current is usually proportional to the level of the muscle activity. An EMG is also referred to as a myogram. Electromyography (EMG), the recording of myoelectric signals which occur when a muscle is in use, can be used to assess the level of activity occurring over a period of time. It can also be used to show the presence of muscle fatigue, a state when a skeletal muscle is unable to maintain the required force of contraction (Hagberg, 1981). A high correlation has been shown between EMG activity and muscular force, for both static and dynamic activities(Hagberg, 1981) Although needle electrodes, entering specific muscles, are used for medical research, occupational EMG records are usually taken from surface electrodes. EMG ﺗﻌﺮﻳﻒ کوتاه اﻟﻜﺘﺮوﻣﻴﻮﮔﺮاﻓﻲ ﻳـﻚ ﺗﻜﻨﻴـﻚ آزﻣﺎﻳـﺸﮕﺎﻫﻲ درارﺗﺒـﺎط ﺑـﺎ ﻇﻬـﻮر، ﺛﺒـﺖ و ﺗﺠﺰﻳﻪ و ﺗﺤﻠﻴﻞ ﺳﻴﮕﻨﺎل ﻫﺎي اﻟﻜﺘﺮﻳﻜﻲ ﻋﻀﻠﻪ اﺳﺖ . ﺳﻴﮕﻨﺎل ﻫـﺎي اﻟﻜﺘﺮﻳﻜـﻲ ﻋـﻀﻠﻪ ﺑﻮﺳﻴﻠﻪ اﺧﺘﻼﻓﺎت ﻓﻴﺰﻳﻮﻟﻮژﻳﻜﻲ در ﺣﺎﻟﺖ ﻏﺸﺎء ﻫﺎي ﺗﺎر ﻋﻀﻼﻧﻲ ﺷﻜﻞ ﻣﻲ ﮔﻴﺮﻧﺪ EMGﻣﻮارد اﺳﺘﻔﺎده و ﻣﺰاﻳﺎي EMG ﮔﺴﺘﺮه اﺳﺘﻔﺎده از ﻋﻼوه ﺑﺮ ﻣﻄﺎﻟﻌﺎت ﭘﺎﻳﻪ اي ﻓﻴﺰﻳﻮﻟﻮژﻳﻜﻲ و ﺑﻴﻮﻣﻜﺎﻧﻴﻜﻲ، ﺣﺮﻛﺖ ﺷﻨﺎﺳﻲ ﺑﻪ ﻋﻨﻮان ﻳﻚ اﺑـﺰار ارزﻳـﺎﺑﻲ ﺑـﺮاي ﺗﺤﻘﻴﻘـﺎت ﻛﺎرﺑﺮدي ﺷﻨﺎﺧﺘﻪ ﺷﺪه اﺳﺖ .ﻓﻴﺰﻳﻮﺗﺮاﭘﻲ / ﺗﻮاﻧﺒﺨﺸﻲ، ﺗﻤﺮﻳﻨﺎت ورزﺷﻲ و اﺛﺮات ﻣﺘﻘﺎﺑـﻞ ﺑـﺪن اﻧـﺴﺎن ﺑـﺎ اﺑـﺰارآﻻت ﺻـﻨﻌﺘﻲ و ﺷﺮاﻳﻂ ﻛﺎري (ارﮔﻮﻧﻮﻣﻲ )از ﺟﻤﻠﻪ ﻛﺎرﺑﺮدﻫﺎي آن است.