Cortical Structure and Electrogenesis

Recording electrical brain potentials in the electroencephalogram (EEG) has become a major instrument in the clinical diagnosis of brain disorders. It has also contributed toward revealing both the nature and the degree of brain dysfunctions accompanying metabolic dysfunctions. Moreover, and particularly in the past decade, the EEG has also turned out to be a valuable aid for the detection of brain activities connected with specifically human brain functions, such as cognitive processes (for a review, see Giannitrapani 1985). In this latter context, the study of event-related potentials has turned out to be most valuable (Rockstroh et al. 1982). Spontaneous EEG activity is becoming more and more important for the analysis of cognitive processes (Duffy 1985), for which statistical processing of EEG data seems to be among the most effective methods at the present time (see Pockberger et al., in this volume).

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