Which voltages are commonly used for calibration inputs in EEG recordings?

In EEG recordings, calibration inputs are critical for ensuring that the equipment is functioning correctly and that the recorded signals are accurate. The commonly used voltage range for calibration inputs in EEG is indeed between 50 µV and 100 µV. This range is chosen because it is large enough to produce a measurable signal that can effectively demonstrate the system's ability to detect small electrical potentials generated by the brain.

Utilizing this range allows technicians to assess the amplitude resolution and overall reliability of the EEG system. By calibrating within this very specific voltage window, professionals can ensure that the system is appropriately set to capture the subtle brain activity expected during actual recordings. Proper calibration is essential for differentiating between genuine neuronal activity and noise, thus enhancing the quality and accuracy of the resulting EEG data.