Human Intracranial Database (release-4)

The Human Intracranial Database (HID) is a collection of stereotactic electroencephalography (sEEG) data in epileptic patients, performing eight behavioral tasks. The behavioral tasks were used as functional localizers: short and classic task paradigms designed to activate large-scale neural networks involved in language processing (LEC1 and LEC2), verbal and visuo-spatial working memory (MVEB and MVIS), visual attention (VISU), motor behavior (MOTO), high-level visual (MCSE) and auditory perception (AUDI). Furthermore, patients were also recorded during resting state (REST) and a series of tests designed to evaluate whether specific types of actions can generate artifacts (ARFA). The sEEG data were obtained via several sEEG depth-electrodes (linear arrays with up to 20 contacts) that were implanted in each patient in a stereotactic surgery. Coordinates of the sEEG electrode contacts are provided in the individual brain space of each patient as well as in a reference brain space (MNI ICBM 152). Semantically sEEG electrode contacts were linked to brain areas of the MarsAtlas, but can be positioned on the individual anatomy for checking purposes.