What does the term 'montage' refer to in EEG?

The term 'montage' in the context of EEG refers specifically to the configuration of electrode placements on the scalp. It is a structured arrangement that determines how electrodes are placed and connected, which ultimately influences the kind of data collected during an EEG study. Different montages can focus on various areas of the brain, allowing technicians to analyze different aspects of brain activity effectively.

Understanding montage is crucial because it can affect the interpretation of the EEG results. The chosen montage will dictate which brain regions are highlighted and how the data can be analyzed in terms of patterns, amplitude, and frequency. Various montage arrangements (such as bipolar or referential) offer distinct advantages depending on the specific clinical question at hand.

In contrast, the other options refer to different aspects of EEG terminology. Types of electrodes pertain to the physical devices used for recording, methods of signal filtering relate to how the EEG signals are processed for clarity, and recording duration concerns the length of time the EEG data is captured. Each of these aspects is important, but none captures the specific meaning of 'montage' as it relates to the arrangement and configuration of electrode placements.