What is the first action recommended to eliminate 60 Hz artifact in EEG recordings?

The first action recommended to eliminate 60 Hz artifact in EEG recordings is to attempt to eliminate the technical issues. This approach is crucial because 60 Hz artifact is typically a result of interference from electrical sources, such as lighting or equipment powered by alternating current. By addressing these technical issues, such as ensuring proper grounding of the equipment, using shielded cables, or moving away from electrical interference sources, one can effectively reduce or eliminate the artifact, leading to cleaner EEG signals.

While changing electrode placements, adjusting gain settings, or performing visual inspections can be useful steps in managing artifacts, they may not directly target the underlying technical sources of 60 Hz noise. Therefore, focusing on the technical aspects first provides a more comprehensive and systematic solution to this common issue in EEG recordings.