What is one key advantage of using the bipolar montage?

The bipolar montage is particularly advantageous for improved detection of localized brain activity because it allows for simultaneous recording of potential differences between pairs of electrodes placed in close proximity to each other. This arrangement helps to emphasize specific brain regions' activity while minimizing the background noise that might come from distant electrode placements.

By focusing on the voltage differences between electrode pairs, the bipolar montage enhances the clarity of the signal related to localized brain events, which is crucial in sleep studies where identifying specific brain activities, such as sleep stages or abnormalities, is essential. The bipolar setup facilitates the observation of changes that occur in the localized area, making it easier for clinicians to diagnose any abnormalities.