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Technical and Practical Aspects of Invasive Recordings and Brain Stimulation 

Technical and Practical Aspects of Invasive Recordings and Brain Stimulation
Chapter:
Technical and Practical Aspects of Invasive Recordings and Brain Stimulation
Author(s):

Gholam K. Motamedi

, Jean Gotman

, and Ronald P. Lesser

DOI:
10.1093/med/9780198714668.003.0003
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date: 18 August 2019

This chapter discusses the technical and practical issues involved in invasive recording and cortical stimulation mapping in patients with drug-resistant epilepsy. It reviews the way in which EEG signals are generated, circumstances when intracranial electrodes are needed, and how such electrodes operate. It also discusses the basic principles of cortical stimulation mapping and different methods of using intracranial electrodes for stimulation purposes, and relevant concepts involved in the process such as charge density and electrode surface area. It reviews different electrodes used for mapping including subdural surface electrodes and depth electrodes.

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