We are the combination of four hospitals: the General Hospital, the Children’s Hospital, the Women’s Hospital and the Traumatology, Rehabilitation and Burns Hospital. We are part of the Vall d’Hebron Barcelona Hospital Campus: a world-leading health park where healthcare plays a crucial role.
Below we will list the departments and units that form part of Vall d’Hebron Hospital and the main diseases that we treat. We will also make recommendations based on advice backed up by scientific evidence that has been shown to be effective in guaranteeing well-being and quality of life.
Would you like to know what your stay at Vall d'Hebron will be like? Here you will find all the information.
The commitment of Vall d'Hebron University Hospital to innovation allows us to be at the forefront of medicine, providing first class care adapted to the changing needs of each patient.
Electroencephalography (EEG) records the electrical activity in the brain. During an EEG various electrodes are placed on the patient's skin to record brain activity.
An EEG can be performed under different conditions: With the patient asleep or even subjected to stimulus such as a flashing light, or after breathing deeply to introduce metabolic changes that reveal an area of the brain with unusual brain activity.
There are different types of EEG waveforms according to their frequency and bandwidth. In a healthy person, a normal EEG will produce alpha waveforms with a frequency of 8 to 12 Hz, and a voltage of 50 microvolts. In the same way, beta and delta waveforms may be detected corresponding to different pathologies. Neurological conditions that may benefit from an EEG are: epilepsy, brain tumours, brain abscesses, brain injuries, and cerebrovascular diseases such as heart attacks or haemorrhaging. EEGs can also be used during neurosurgery to detect and distinguish healthy and diseased brain tissue.
Sensors (electrodes) are placed on different parts of the head. This usually takes a few minutes and, as it is non-invasive, can be repeated as often as necessary.
An EEG is a routine test that poses no risks and can be repeated several times during a neurological illness.
Brain imaging tests are also useful and may allow more accurate diagnosis and treatment when combined with an EEG.
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