Abstract: Described is an electroencephalograph (EEG) data collection system. The system includes a helmet with a plurality of data collection electrodes. Each data collection electrode has a housing and a pressurized probe affixed with the housing. The pressurized probe includes an electrically conductive base for electrical communication with the scalp of a user for detecting EEG signals of the user. The pressurized probe is pressurized such that the electrically conductive base is forced away from the housing and toward a user's scalp. The data collection electrode is further formed to hold a discrete amount of an electrically conductive gel therein and dispense the gel proximate the electrically conductive base to facilitate an electrical communication between the user's scalp and the electrically conductive base. The system also includes Relational Data Base Management System that allows for in vivo EEG data collection, analysis, and diagnosis.