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The Electrical Activity of a Brain in Biomedicine
The EEG signal is a sum of oscillations with characteristic frequency and Gaussian noise, thus the simplest way to describe the EEG signal is to present frequency and amplitude of component brain waves. In relation to being an EKG Technician, having an EKG Technician job or even attending to an EKG Technician Classes , most of the cerebral signal observed in the scalp EEG falls in the frequency range of 1 – 40 Hz interval with amplitude which does not exceed 100 ?V or about 100 times less in comparison with ECG signal.
Traditionally, brain waves are named by the following letters of Greek alphabet in order of their discovery. Each wave is closely associated with the activity condition of the person subjected to an examination. They are thought to represent the activity of the visual cortex in an idle state. Occipital alpha waves during periods of closed eyes are the strongest EEG brain signals.