What might happen to cortical peaks when lowering the high-frequency filter (HFF) from 500 Hz to 200 Hz?

Lowering the high-frequency filter (HFF) from 500 Hz to 200 Hz can lead to an increase in the apparent duration of cortical peaks, resulting in peaks appearing longer in latency. This occurs because the higher-frequency components of the signal are attenuated, which can cause the waveform to spread out over time. When the rapid oscillations that contribute to the sharpness and precision of the peak are filtered out, the peaks can appear to take longer to reach their maximum amplitude. As a result, the latency of the peaks increases due to the loss of high-frequency energy that would normally allow for a quicker rise and fall of the waveform.

In contrast, the other options either imply a misunderstanding of the effects of filtering on signal morphology or suggest changes that are not typically observed when adjusting the HFF in this manner.