Which setting would you adjust to improve the visibility of high-frequency brain activity?

The high-frequency filter setting is crucial for enhancing the visibility of high-frequency brain activity, such as gamma waves or fast bursts of neural oscillations. By adjusting the high-frequency filter to a higher value, you allow these rapid signals to pass through while attenuating lower-frequency noise that could obscure them. This is particularly important when analyzing specific brain functions that are represented in the higher frequency ranges.

In contrast, adjusting the low-frequency filter would primarily affect the lower end of the frequency spectrum and potentially eliminate or diminish important high-frequency signals. The sampling rate primarily determines how often data points are collected but does not directly filter out frequencies. The gain setting adjusts the amplitude of the signals but does not discriminate based on frequency, making it less effective for enhancing high-frequency activity specifically. Therefore, adjusting the high-frequency filter is the most effective way to improve visibility of high-frequency brain activity.