What is meant by electroencephalography?
An electroencephalogram (EEG) is a test that detects electrical activity in your brain using small, metal discs (electrodes) attached to your scalp. Your brain cells communicate via electrical impulses and are active all the time, even when you’re asleep.
What is an electroencephalogram used for?
An EEG is a test that detects abnormalities in your brain waves, or in the electrical activity of your brain. During the procedure, electrodes consisting of small metal discs with thin wires are pasted onto your scalp. The electrodes detect tiny electrical charges that result from the activity of your brain cells.
What does slow brain waves mean?
Focal slow wave activity on the EEG is indicative of focal cerebral pathology of the underlying brain region. Slowing may be intermittent or persistent, with more persistent or consistently slower activity generally indicating more severe underlying focal cerebral dysfunction.
What part of the brain does EEG measure?
Electroencephalography (EEG) is a technique that reflects the electric activity of cortical neurons. Information related to motor movement can be detected in motor cortex region of the brain. Also various changes in prefrontal cortex can also be detected using EEG (as in cases of autism spectrum disorder or ASD).
What are slow brain waves called?
Delta waves are the slowest recorded brain waves in human beings. They are found most often in infants and young children, and are associated with the deepest levels of relaxation and restorative, healing sleep.
What is abnormal brain waves?
An abnormal EEG means that there is a problem in an area of brain activity. This can offer a clue in diagnosing various neurological conditions.
Is EEG a brain imaging?
Electroencephalography (EEG) EEG could be considered the father of neuroimaging techniques, since it is the first technique used to measure (electrical) activity of the living brain.