What is the recommended action when electrode impedance exceeds 10,000 ohms?

When electrode impedance exceeds 10,000 ohms, the recommended action is to reduce the impedance by adding electrolyte. High impedance can lead to poor signal quality during an EEG recording, resulting in artifacts that may obscure important brain activity data. By applying more electrolyte, the contact between the electrodes and the scalp can be improved, enhancing the conductivity and resulting in a more accurate representation of the electrical activity of the brain.

In this context, maintaining low impedance is crucial for obtaining reliable data, and taking measures to reduce impedance is a proactive approach to troubleshooting the recording setup. The use of electrolyte gel or conductive paste ensures that the electrodes function effectively, enabling better electrode-skin contact and minimizing noise in the recorded data.