EEGtutkimuksia

EEGtutkimuksia, or electroencephalography studies, are non-invasive diagnostic tests that measure and record the electrical activity of the brain. This activity is detected by electrodes placed on the scalp. The brain's electrical signals, which are generated by the communication between neurons, are then amplified and displayed as wavy lines on a computer screen. These patterns, known as brainwaves, vary in frequency and amplitude and can reflect different states of brain function, such as wakefulness, sleep, or altered cognitive states.

EEGtutkimuksia are used to diagnose a variety of neurological conditions. Epilepsy is a primary indication, as EEG can identify abnormal electrical discharges that characterize seizures. It is also employed to evaluate sleep disorders, such as insomnia and narcolepsy, by analyzing the distinct brainwave patterns during different sleep stages. Furthermore, EEG can help assess brain damage resulting from head injuries, strokes, or brain tumors, and can be used to monitor brain function in patients in a coma or undergoing surgery. In some cases, it may assist in the diagnosis of certain psychiatric disorders or inflammatory conditions affecting the brain. The procedure itself is painless and typically takes about 30 to 60 minutes, though longer recordings may be necessary for specific evaluations.