![]() ![]() For instance, eye movements, eye blinks, cardiac activity and muscle activity occurred in EEG signal are some major types of physiological artifacts. The cause of artifacts may arise from measurement instrument and human subjects, the prior one including faulty electrodes, line noise and high electrode impedance, which can be avoided by more precise recording system and strictly recording procedures, whereas physiological artifacts are more complicated to remove. However, EEG is high temporal resolution and its signals are easily contaminated by undesired noise, which will resulting in various artifacts. As a special and complicated biological electricity signal, it reflects the functional state of brain allied to the person’s mental condition, from which we can extract the vital information, and further monitor patient’s heath, diagnosis and identify different brain conditions. ![]() ![]() EEG is one of the tools used for analyzing brain activity, which signals can be recorded from several electrodes on the scalp. With the emergence of non-invasive techniques, the research of neuroscience, cognitive science and cognitive psychology has been developed by electroencephalograph (EEG), functional near-infrared spectroscopy (fNIRS), magnetoencephalography (EMG) and other key tools. ![]()
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