High frequency spectral changes induced by single-pulse electric stimulation: Comparison between physiologic and pathologic networks.

Objective: To investigate functional coupling between brain networks using spectral changes induced by single-pulse electric stimulation (SPES).

Method: We analyzed 20 patients with focal epilepsy, implanted with depth electrodes. SPES was applied to each pair of adjacent contacts, and responses were recorded from all other contacts.

Intrusive Thoughts Elicited by Direct Electrical Stimulation during Stereo-Electroencephalography.

Cortical direct electrical stimulation (DES) is a method of brain mapping used during invasive presurgical evaluation of patients with intractable epilepsy. Intellectual auras like intrusive thoughts, also known as forced thinking (FT), have been reported during frontal seizures. However, there are few reports on FT obtained during DES in frontal cortex.

A connectomics approach combining structural and effective connectivity assessed by intracranial electrical stimulation.

In the context of the human brain, the term "connectivity" can refer to structural, functional or effective connectivity. Intracranial electrical stimulation is perhaps the most direct way of investigating the effective connectivity. We propose a method of mapping the effective connectivity, revealed by the electrical stimulation of brain structures, over the structural connectome (SC), obtained through diffusion spectrum imaging (DSI), to form a structural-effective connectome (SEC).