During the recording of cerebral activity, if the calibration input voltage is changed from 50 µV to 100 µV, what will be the result?

When changing the calibration input voltage from 50 µV to 100 µV, the amplitude of the cerebral activity displayed on the EEG does not change in relation to the brain's actual electrical activity. The calibration voltage only affects how the EEG system interprets and displays the amplitude of the signals.

The purpose of the calibration input is to provide a reference point for amplitude measurement. Increasing the calibration voltage effectively scales the output seen on the display, but it does not alter the underlying brain signals. If the input voltage is doubled without any actual change in the recorded brain activity, the readings will reflect this change but will still represent the same neural activity occurring in the brain.

Hence, while visually the amplitude may appear larger due to the calibration input adjustment, it does not indicate that there has been an increase in the actual activity being recorded. The brain's electrical activity remains unchanged, leading to the conclusion that the calibration adjustment will have no effect on the biological signals being captured.