What is a common feature when documenting eye movements in EEG?

When documenting eye movements in EEG, measuring the potential between two eye electrodes is common practice. This technique allows for the accurate capture of the electrical activity associated with eye movements, such as saccades and blinks, which can be reflected in the EEG data. By placing electrodes around the eyes (typically at the outer canthi of each eye and sometimes above or below), technicians can measure the differential voltage created by eye movements.

This approach is particularly important because it distinguishes eye movement artifacts from brain activity, helping to maintain the integrity of the EEG recordings. The potential difference between the electrodes provides clear signals that indicate changes in eye position, which are essential for interpreting the EEG data correctly and understanding the patient's neurological status. This method is widely accepted, making it a standard practice in EEG documentation regarding eye movements.

Other options, while relevant in different contexts of EEG monitoring and interpretation, do not specifically focus on the method used for accurately capturing eye movements. For instance, referencing to a fixed electrode is not usually applicable in this context, as eye movements require relative measurements. Using muscle activity detection may be part of understanding artifact but isn't specifically used for documenting eye movements. Obtaining voltages from EEG channels is essential for general EEG analysis but does not address the