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Tuesday 20 August 2019
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child looking up, on his own

Electroencephalogram EEG

If your child requires this test it will be carried out at Royal Manchester Children’s Hospital and an appointment will be sent to you at a later date.


Your brain constantly produces tiny electrical signals.  During an EEG test, small sensors called electrodes, are placed on your scalp.  They are attached using a special glue or paste.  These are connected by wires to an EEG recording machine.  The electrodes pick up the electrical signals from your brain and record them on a computer.


The electrodes only pick up the electrical signals, they do not affect your brain and they do not cause any pain.


The electrical signals look like wavy lines and these wavy lines show your brainwave patterns.  The EEG test can only show your brainwave patterns at the time the test is carried out.  At different times, your brainwave patterns may be different.  Most peoples brainwave patterns look similar to other people's.  Sometimes the EEG test shows that a person has different brainwave patterns to other people.  These are caused by unusual electrical activity in the brain.  They can sometimes, but not always, show that the person has epilepsy.


Further information can be found here.