Human Scalp EEG Fields: Evoked, Alpha, Sleep, and Spike-Wave Patterns

Complete information about the human scalp EEG is available in the distribution of the electrical field on the scalp, and its change as a function of time. Any conventional EEG as recorded between unipolar and bipolar electrode combinations can be reconstructed from complete data of the field distributions. However, the large amount of data in recordings of field distributions demands considerable data reduction before evaluation. One strategy of data reduction is particularly challenging: a limited number of intracranial model generators, if possible only one, can be fitted to account for a given field distribution. A sequence of field distributions could thus be described by the parameters of the model generator(s) which change as a function of time.

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