A Neural Minimum Input Model to Reconstruct the Electrical Cortical Activity

In recent years, technology has allowed the progressive increase in the number of channels for EEG recording. The scientific rationale is the demand for an increase of the spatial resolution of the recording to better locate the sources of the underlying cortical activity. Despite some papers confirm the improvement of the spatial resolution by using 256 channels we wonder if in fact this density of electrodes on the scalp does not constitute an useless spatial oversampling. Thus we set out to determine whether the amount information derived from a standard 19 channel EEG recording was obtainable with a smaller number of electrodes, in particular with a mounting to 8 channels.