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What is EEG ?
An electroencephalogram record (E.E.G. or EEG) is a test that takes a reading of electrical activity in your brain using small, metal EEG electrodes of EEG machine, attached to your head. Electric impulses are used by your brain cells, and they are active all the time even if you are asleep. Electrodes record patterns for the brain wave and the EEG sends the data to a cloud or computer.
What are the types of EEG Machine ?
EEG is a non-invasive method for monitoring electrical signals in the brain.
1) Portable EEG Machine:- Electrons, amplifiers, filters and analog to a digital converter contain most of these products. Wireless or portable EEG machines have a battery and EEG's wired machines are directly connected to a machine.
2) Ambulatory EEG Machine:- An ambulatory electroencephalogram (EEG) machine is used during an extended electroencephalogram (EEG) test. Ambulatory EEG machines are often used to diagnose sleep disorders or seizure disorders. An ambulatory EEG is capable of recording signals for up to 72 hours while traditional EEGs are able to record signals for 1-2 hours.
The ambulatory EEG machines which allow for longer monitoring, are a bit more common but are in limited use(outside office or hospital setting).
3) Neurofeedback machines or EEG biofeedback machines:- EEG systems that enable a person to view their brain activity in real-time, also known as EEG Bio-feedback Machines. The EEG biofeedback machine is synchronized with a computer or a cloud device during this type of EEG monitoring and the brain waves of a subject are on a computer display.
Why EEG is used ?
EEG machines can be a useful tool for diagnosing disorders like epilepsy or different types of seizures. The EEG test might be helpful for diagnosing or treating certain disorders:-
- Brain injury from a head injury
- Suffering from brain dysfunctions can have various underlying causes (encephalopathy)
- Brain bleed (encephalitis)
- Brain tumor
An electroencephalogram (EEG) might be used to confirm brain death in someone who's not in a waking state. A continuous EEG system is being used to find the best anesthesia level for someone who is in a coma.