Which of the following is NOT a common cause of 60-Hz artifact?

The correct answer is identified as high-frequency sound exposure. This factor is not associated with causing 60-Hz artifact, which is primarily linked to the electromagnetic interference from AC power sources and related equipment.

60-Hz artifact typically arises from electrical devices operating on the electrical grid, which can introduce noise into the recording, affecting the quality and accuracy of polysomnographic data. The presence of electrical equipment nearby is a well-known contributor, as they can create interference in the signals being recorded. Similarly, improperly cleaned equipment can lead to poor electrical connections, which may also result in the introduction of artifacts.

In contrast, high-frequency sound exposure does not impact the electrical signals that are recorded during a sleep study. It is unrelated to the 60-Hz interference since sound frequencies do not operate on the same principles as electrical noise from power sources. This distinction is essential for understanding the sources of different types of artifacts in polysomnography.