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Tuesday, 7 August 2018

Advantages, Disadvantages and Applications of EEG

Advantages of EEG:


1.They are functionally fast, relatively cheap and safe way of checking the functioning of different areas of brain.

2. High precision time measurements

3.Today's EEG technology can accurately detect brain activity at a resolution of a single millisecond..
 
4.EEG electrodes are simply stuck onto the scalp. It is therefore a non-invasive procedure.

5.EEG equipment is relatively inexpensive compared with other devices and is simple to operate. 




Disadvantages of EEG:

1.The main disadvantage of EEG recording is poor spatial resolution.

2.The EEG signal is not useful for pin-pointing the exact source of activity. In other words they are not very exact.

3.EEG waveform does not researchers to distinguish between activities originating in different but closely adjacent locations.

Applications of EEG:
      
1. EEG is mainly used in studying the properties of cerebral and neural networks in neurosciences.

2. It is used to monitor the neurodevelopment and sleep patterns of infants in ICU and enable the physician to use this information to enhance daily medical care.

3. In epilepsy, EEG is used to map brain areas and to receive localization information prior to a surgery. 

4. The EEG neuro-feedback or EEG bio-feedback or EEG bio-feedback has many applications such as treating for physiological disorders and neurological disorders such as epilepsy.

5. Many disorders as chronic anxiety, depression etc can be found out using as EEG pattern.

Features of EEG:

• Hardware costs are lower when compared with other imaging techniques such as MRI scanning.

• EEG sensors can be deployed into a wide variety of environments.
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• EEG allows higher temporal resolution on the order of milliseconds.

• EEG is relatively tolerable to subject movements as compared to MRI.

• The silent nature of EEG allows for better study of the responses.

• EEG can be used in subjects that are not capable of making a motor response.

• In EEG some voltage components can be detected even when the subject is not responding to stimuli.



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