What settings could help reduce sweat artifact in a patient with asymmetrical low voltage fast activity?

To reduce sweat artifacts in EEG recordings, it is essential to optimize the sensitivity and frequency settings of the EEG equipment. The correct choice emphasizes a balanced approach to the low-frequency (LF) and high-frequency (HF) settings.

Selecting the setting with a low LF of 5 Hz allows the system to be more sensitive to the slower components of brain activity without being overly responsive to artifacts like sweat, which may have lower frequency components. The high frequency set at 70 Hz is also appropriate, as it helps eliminate higher-frequency noise, allowing for clearer brain signal recording.

This combination of settings provides a compromise that emphasizes brain wave activity while filtering out rapid fluctuations caused by sweat or other muscle activity. The sensitivity setting of 5 µV/mm ensures that the system captures sufficient detail without being overly sensitive to electrical noise.

Other choices have either higher LF or HF settings that may not effectively filter out the rapid sweeps and spikes caused by sweat, or they have sensitivity settings which may either not capture the signal adequately or may amplify artifacts. Thus, option B effectively highlights the configuration that can mitigate sweat artifact while still capturing the necessary brain waves.