What is the minimum recommended sampling rate for EEG according to AASM?

The minimum recommended sampling rate for EEG according to the American Academy of Sleep Medicine (AASM) is 500 Hz. This sampling rate is essential to accurately capture the frequency components of the brain's electrical activity, which can include a wide range of frequencies, particularly in the context of sleep studies. By sampling at 500 Hz, each waveform component of the EEG can be properly represented, allowing for a more reliable analysis and interpretation of the data. This ensures that the electrical patterns associated with various sleep stages, as well as any abnormalities, can be detected and characterized appropriately. A lower sampling rate might miss important high-frequency activity or distort the waveform, leading to potential misinterpretations in sleep disorder diagnoses.