P315 Simple correlation analysis reveals falsely interpreted interictal spikes correlated to artefactual sources: A simultaneous EEG–fMRI study

Simultaneous EEG–fMRI is increasingly used in presurgical evaluation of epilepsy patients. The MR environment causes massive gradient artefacts and cardioballistic artefacts (BCG) to the recorded EEG signal, which must be corrected for, to make the reading of the EEG possible. This study aims to see, whether residual artefacts could disturb the specialist interpreting the EEG, even after apparently successful correction of the artefacts via widely accepted methods.

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