What happens to the amplitude of a signal if the calibration voltage is increased?

If the calibration voltage is increased, the amplitude of the EEG signal itself remains unchanged. Calibration is a process designed to ensure that the EEG system operates correctly and measures signals accurately. During this process, an external known voltage is applied to the system to establish a reference point for measuring brain activity.

When you increase the calibration voltage, it does not alter the inherent characteristics of the EEG signals being recorded. Instead, it may change the scale of the signal representation on the display or in the recorded output, allowing for more accurate interpretation but without affecting the actual amplitude of the brain waves generated by neuronal activity. Thus, while the calibration may adjust how the signal is visualized, the underlying amplitude of the signal as it relates to brain activity is not modified.