What is the recommended action to take if the electrode impedance readings are above the specified limit?

When electrode impedance readings exceed the specified limit, the appropriate action is to reduce the impedance using an electrolyte solution or by changing the electrodes. High impedance levels can lead to poor signal quality and potentially unreliable EEG readings.

Using an electrolyte solution can help enhance the conductivity between the scalp and the electrodes, thus ensuring better signal acquisition. If the impedance remains high even after attempting to adjust it with electrolytes, replacing the electrodes may be necessary to ensure that they are functioning optimally and providing a good connection.

This approach emphasizes maintaining the integrity of the EEG recording by ensuring the electrodes are effectively capturing the brain’s electrical activity, thus fulfilling the quality requirements necessary for accurate interpretation. Other options do not directly address the problem of high impedance or could exacerbate the situation by not effectively improving the signal quality.