Abstract
Apart from the well-known spontaneous α-rhythm, several forms of oscillations in the 10 Hz frequency range exist in the EEG. When these are temporally related to a defined event, they are called event-related α-oscillations. With regard to possible functional correlates it appears important that these oscillations have topography- and modality-dependent properties. Furthermore, they are influenced by various cognitive processes. The sum of these results hints at a close relation between α-oscillations and processing in the brain (which also holds for event-related oscillations in other frequency ranges, [69]).
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