eemagine EEG can be used for EEG review, automatic spike detection, averaging of spike events, their localization with diples, and automatic reporting of the findings in a Word document. In the first analysis step, the EEG data are loaded and reviewed using different montages and filter settings.

3D mapping of the voltage topology is helpful when it comes to the review of sharp waves and peaks in the data, which may originate from a focal source in the brain. 3D mapping is integrated with the EEG review and lets you freele choose the latencies as well as the 3D view orientation.

eemagine EEG lets you detect spikes automatically in EEG recordings. A pattern-matching algorithm is applied to find candidates for spikes, and a number of criteria, such as peak-to-peak amplitude versus background activity (estimated with a linear prediction model), duration and slope are evaluated to reduce the number of false detections. The spikes can be easily reviewed as their properties (time, duration, channel with highest amplitude, peak amplitude and others) are listed. Clicking at the entry in the list brings you to the page where this event has been found. The review lets you delete false detections and add new spike events .

eemagine EEG provides a 3D reconstruction method for the localization of focal activity in the brain. The assumption is that, given focal EEG activity, the location of the focus can be reconstructed with sufficient accuracy with a single dipole in a realistic boundary element head model. The model consists of a three-layer head surface, a set of 10-20 electrode locations, and an MRI taken from a male adult. Applying the dipole analysis to unaveraged EEG spike data, clusters of dipoles appear in regions where the focal activity origintates. The reconstruction of averaged spikes is an alternative option.

Reporting offers many different ways to document the results of your work. Findings can be included by means of text, tables or figures. For example, a table with spike statistics can be documented, including the number of spikes per electrode and their mean amplitude. The figure shows a chart with the color-coded distribution of spikes over the 10-20 electrodes.