1.
ELECTRO-MYOGRAPH (EMG)
MACHINE

2.
1) What is EMG machine ?
2) How does EMG work ?
3) Types of EMG tests
4) Why is EMG machine used ?
5) Advantages of EMG
6) Disadvantages of EMG
7) Conclusion
8) Reference

3.
WHATISEMGMACHINE?
EMG stands for Electro-Myography (EMG). It is
a medical diagnostic tool used to measure and
record electrical signals produced by
muscles during contraction. These signals
are used to evaluate the function and health
of the muscles and the nerve fibers that
control them. The EMG machine consists of
electrodes that are attached to the skin
surface and connected to a recording
device that amplifies and analyzes the
signals.

4.
HOW DOES EMG MACHINE WORK?
The EMG signals are generated by the movement of charged
particles (ions) within the muscle fibers. When a muscle contracts,
these ions produce electrical signals that are transmitted to the
skin surface. The electrodes pick up these signals and the
recording device amplifies them for analysis.The patterns and
amplitudes of these signals provide information about the function
and health of the muscles and the nerve fibers that control them.

5.
TYPES OF EMG TESTS
There aretwo types of EMG:Surface EMGandNeedle EMG.
SurfaceEMG useselectrodes attachedtotheskinsurfacetomeasure the
electricalactivityof muscles.
Needle EMG involves insertingathinneedle intothemuscle tomeasurethe
electricalactivityof individualmusclefibers.
Both methodshave theirownadvantagesanddisadvantagesandareused
indifferent diagnosticapplications..

6.
WHY IS EMG MACHINE USED?
EMGis commonlyusedtodiagnoseconditionssuch
asnerve injuries,musclediseases, andspinalcord
disorders. Itisalsousedto evaluate the
effectiveness oftreatments forthese conditions,
suchasphysical therapyorsurgery. Inaddition,EMG
isusedtomonitorthe progress of nerve andmuscle
recovery following aninjury.

7.
ADVANTAGES OFEMG
• EMG machine detects electricalpotential
produced by muscle cells when these cells are
electricallyor neurologically activated.
• The monitored signals are converted into
electricalform which can be turned into speech.
• It can be used for diagnosisof neurogenic or
myogenic diseases.

8.
• As this method requires needle
electrodes to be inserted through
skin into muscle tissue, it is painful
method.
• The method monitors nerve roots
only.
• The method gives less accurate
results due to disturbance from
surroundings when surface
electrodes are used.
DISADVANTAGES OF EMG MACHINE

9.
CONCLUSION
TheElectro-myograph (EMG)machineisapowerful
diagnostictool thatplaysanimportantrole in
evaluatingthe functionandhealthofmuscles andnerve
fibers. TheEMGmachineprovides valuableinformation
thatcanhelpphysiciansdiagnoseconditions, develop
appropriatetreatmentplans, andmonitortheprogress
ofrecovery frominjury..

10.
REFERENCE
 WIKIPEDIA
 MAYO CLINIC
 JOHN HOPKINS MEDICINE
 HEALTHLINE
 MEDLINE PLUS(GOVERNMENT SITE)