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Investigative Techniques

Our team uses the latest technology to enable early diagnosis and treatment, leading to better outcomes. Read the summaries below for information on what you can expect with each technique.

Electroencephalography (EEG) - This measures the electrical activity of the brain and helps our neurophysiologists identify any abnormal patterns that might help in the diagnosis and treatment of your condition. This investigation takes about an hour to perform.

Videotelemetry EEG - This is a more prolonged recording during which EEG and video recording are carried out simultaneously, to capture the symptoms you have described and experienced. Recordings can last from several hours to up to 5 days, depending on how often the symptoms are occurring.

Ambulatory EEG - this is a portable EEG recording lasting between 24 and 48 hours which allows you to carry on with your everyday activities whilst the test aims to capture typical symptoms.

Evoked potentials (EP) - this measures the time it takes for a nerve impulse generated by a specific stimulus, such as light, sound or touch, to reach the brain. The test typically takes about one and half hours.

Nerve Conduction Studies (NCS) - this measures the health of the nerves in the body, by measuring the speed of a signal from one nerve point to another. It typically takes between 30 minutes and an hour.

Electromyography (EMG) - this assesses the health of both the muscles and nerves and is almost always carried out together with an NCS. Specialised single fibre EMG studies are also carried out and can take up to 1.5 hours.

Carpal Tunnel Study (CTS) - this is a special test involving the upper limbs to look at problems affecting the area around the wrist. It typically takes about 45 minutes.

Further Questions? If you would like any more information please use the links provided or contact  the Department Manager, Gail Charlton on 0191 2825877.

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