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| = EEG and epilepsy = This tutorial introduces some concepts that are specific to the management of EEG recordings in the Brainstorm environment. It also describes a standard pipeline for analyzing epilepsy recordings. It is based on clinical case from the Epilepsy Centre, at the University Hospital Freiburg, Germany. The EEG data was recorded at 1024Hz, using a Neurofile NT digital video-EEG system with 128 channels. The anonymized dataset can be downloaded directly from the [[http://neuroimage.usc.edu/bst/download.php|download page]] (sample_epilepsy.zip). The case from the tutorial is also published in this article:<<BR>> Dümpelmann M, Ball T, Schulze-Bonhage A, [[http://www.ncbi.nlm.nih.gov/pubmed/21618659|LORETA allows reliable distributed source reconstruction based on subdural strip and grid recordings]], Hum Brain Mapp. 2012 == Presentation of the clinical case == The signal was filtered in the recording system with a high-pass filter with a time constant of 1 second and a low-pass filter with a cutoff frequency of 344 Hz. The spikes were visually identified and averaged with the ASA package. The spike average showed prominent peaks in the grid contacts G_A2-4, G_B2-5, G_C1-3. recordings |
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