Which artifact is specifically addressed by ensuring the room is cooler and using a fan during EEG recording?

Which artifact is specifically addressed by ensuring the room is cooler and using a fan during EEG recording?

• A. Sweat sway artifacts
• B. Movement artifacts
• C. Electrical interference artifacts
• D. Cardiac artifacts

Answer: (A)

Sweat-related artifact is addressed by keeping the room cooler and using a fan. When a person sweats during EEG recording, skin impedance and moisture change at the electrode-skin interface, causing irregular, high-amplitude fluctuations that can contaminate the EEG signal. Lowering the temperature and providing airflow reduces sweating, stabilizing the electrode contact and minimizing these sweat-induced artifacts. Movement artifacts come from muscle activity and are not specifically mitigated by cooling. Electrical interference artifacts stem from external electrical sources, and cardiac artifacts arise from the heart’s activity—neither is primarily affected by room temperature or a fan.

Sweat-related artifact is addressed by keeping the room cooler and using a fan. When a person sweats during EEG recording, skin impedance and moisture change at the electrode-skin interface, causing irregular, high-amplitude fluctuations that can contaminate the EEG signal. Lowering the temperature and providing airflow reduces sweating, stabilizing the electrode contact and minimizing these sweat-induced artifacts. Movement artifacts come from muscle activity and are not specifically mitigated by cooling. Electrical interference artifacts stem from external electrical sources, and cardiac artifacts arise from the heart’s activity—neither is primarily affected by room temperature or a fan.