Sunday, 15 November 2015
An electroencephalogram (EEG) MY TEST ON MONDAY 16TH NOVEMBER 2015
An electroencephalogram (EEG) is a recording of brain activity.
During the test, small sensors are attached to the scalp to pick up the electrical signals produced when brain cells send messages to each other.
These signals are recorded by a machine and are looked at by a doctor later to see if they're unusual.
The EEG procedure is usually carried out by a highly trained specialist called a clinical neurophysiologist during a short visit to hospital.
An EEG can be used to help diagnose and monitor a number of conditions affecting the brain.
It may help identify the cause of certain symptoms – such as seizures (fits) or memory problems – or find out more about a condition you've already been diagnosed with.
The main use of an EEG is to detect and investigate epilepsy, a condition that causes repeated seizures. An EEG will help your doctor identify the type of epilepsy you have, what may be triggering your seizures, and how best to treat you.
Less often, an EEG may be used to investigate other problems, such as dementia, head injuries, brain tumours, encephalitis (brain inflammation) and sleep disorders, such as obstructive sleep apnoea.
Your appointment letter will mention anything you need to do to prepare for the test.
Unless told otherwise, you can usually eat and drink beforehand and continue to take all your normal medication.
To help the sensors stick to your scalp more easily, you should make sure your hair is clean and dry before arriving for your appointment and avoid using products such as hair gel and wax.
You might want to bring a hairbrush or comb with you as your hair may be a bit messy when the test is finished. Some people bring a hat to cover their hair until they can wash it at home afterwards.
There are several different ways an EEG recording can be taken. The clinical neurophysiologist will explain the procedure to you and can answer any questions you have. You'll also be asked whether you give permission (consent) for the various parts of the test to be carried out.
Before the test starts, your scalp will be cleaned and about 20 small sensors called electrodes will be attached using a special glue or paste. These are connected by wires to an EEG recording machine.
Routine EEG recordings usually take 20 to 40 minutes, although a typical appointment will last about an hour, including some preparation time at the beginning and some time at the end. Other types of EEG recording may take longer.READ MORE-http://www.nhs.uk/Conditions/EEG/Pages/Introduction.aspx
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