Impact of Brain Surface Boundary Conditions on Electrophysiology and Implications for Electrocorticography.

ABSTRACT: Volume conduction of electrical potentials in the brain is highly influenced by the material properties and geometry of the tissue and recording devices implanted into the tissue. These effects are very large in EEG due to the volume conduction through the skull and scalp but are often neglected in intracranial electrophysiology. When considering penetrating electrodes deep in the brain, the assumption of an infinite and homogenous medium can be used when the sources are far enough from the brain surface and the electrodes to minimize the boundary effect. When the electrodes are recording from the brain's surface the effect of the boundary cannot be neglected, and the large surface area and commonly used insulating materials in surface electrode arrays may further increase the effect by al

SUBMITTER: Rogers N 

PROVIDER: S-EPMC7438758 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature