简单了解EEG
What?
EEG is the electrical response of brain cells in the cerebral cortex.
How to record?
typically collected by an electrode collection system(10/20 system)placed on the head of the brain.
characteristic
- a highly random nonlinear non-stationary signal
- contains very complex components
- the signal amplitude is microvolts,and the intensity is very weak.
- it is very susceptible to other physiological signals of the human body(EOG/ECG/EMG) or interference from non-physiological signals such as spatial electromagnetic noise.
Existed problem
Artifacts often mask the waveform characteristics of EEG,which makes the reading of EEG signals more difficult
and bring great difficulties to the subsequent research and application of EEG signal.