De. Blum, COMPUTER-BASED ELECTROENCEPHALOGRAPHY - TECHNICAL BASICS, BASIS FOR NEW APPLICATIONS, AND POTENTIAL PITFALLS, Electroencephalography and clinical neurophysiology, 106(2), 1998, pp. 118-126
EEG has been recorded on paper-based analog systems for over 50 years.
In the past 5 years, computer-based digital systems have become more
widely used. Digital systems eliminate some artifacts that plagued ana
log recordings but introduce subtle new problems including aliasing an
d dynamic range. Digital systems allow reformatting of the same EEG se
gment using different gain, filter and montage settings. The digital s
ignal allows for measurement and computations on the EEG, leading to a
pplications such as power spectrum, topographic mapping, and spike or
seizure detection. (C) 1998 Elsevier Science Ireland Ltd.