Neurophysics of EEG

Question 1

What is a far-field?

Answer 1

Potentials recorded that aren’t touching the recording electrode
i.e. recording potentials from brain via electrode placed on scalp

Question 2

Give an example of an intracellular source and an extracellular source

Answer 2

Flow of cations from inside cell to extracellular environment would be an extracellular source
Flow of anions from intracellular to extracellular environment would be an intracellular source
(all about recording location)