ABCN CNP Practice Questions - ABCN Clinical Neurophysiology Certification

In the international 10-20 electrode system, what do the numbers "10" and "20" specifically refer to?

The number of electrodes used in each hemisphere The frequencies in Hz at which the EEG is sampled The percentage of the total skull distance (10% or 20%) between adjacent electrodes The standard inter-electrode impedance values in kilohms

Correct Answer:

The percentage of the total skull distance (10% or 20%) between adjacent electrodes

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