![]() For example, the lowest frequency Delta state occurs when we are in a state of deep sleep while the highest frequency Gamma state occurs when we are in a state of being highly cautious.Ī brain wave sensor is a remarkable tool to keep a note of the brain waves. So, it can be concluded that the frequency of brain waves is directly proportional to the attention span of the brain. It offers millisecond-range temporal resolution which is certainly not possible in other methods like in CT, PET, or MRI. But still, EEG is a valuable tool for research and diagnosis. Some other problems which can be diagnosed via EEG sensors are sleep disorders, depth of anesthesia, encephalopathies, and brain death.Įarlier, EEG was widely used for the first-hand diagnosis of tumors, stroke, and other focal brain disorders. ![]() EEG is most often used to diagnose epilepsy, which can be identified from the abnormalities in EEG readings. ![]() Brain sensors are typically noninvasive, with the electrodes placed alongside the scalp, though invasive electrodes are sometimes used in electrocorticography.ĮEG measures voltage fluctuations that arise from the ionic current within the neurons of the brain. Electroencephalography (EEG) is an electrophysiological monitoring method to record the electrical activity of the brain. ![]()
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