Method and system for collecting and processing bioelectrical signals

A system for electroencephalography electrode adjustment, comprising:

• a set of electrodes, wherein the electrodes are configured to measure electroencephalography (EEG) signals from a user head;
• an actuatable housing mounting the set of electrodes and configured to bias the electrodes against the user head;
• and
• a processing system configured to:
• determine a probabilistic model;
• and
• for each electrode in the set:
• receive a set of EEG signals acquired by the electrode;
• determine a contact quality metric based on the set of EEG signals;
• extract feature values for a set of features from the set of EEG signals;
• determine a signal quality metric based on the feature values, using the probabilistic model;
• and
• facilitate electrode adjustment in real time, based on the signal quality metric and the contact quality metric.