<p>The earliest quantitative EEG (QEEG) reference normative database was developed in the 1950s at UCLA as part of the NASA study and selection of astronauts for purposes of space travel (Adey et al, 1961; 1964a; 1964b). Clinical inclusion and exclusion criteria were not used because there was no intended clinical application of this early QEEG reference normative database. However, the essential quantitative foundations of QEEG normative databases were tested such as the calculation of means and standard deviations and measures of Gaussianity, complex demodulation, fourier spectral analysis and basic statistical parameters necessary for any reference normative database.<br></p>