What will happen to the waveform when Input 1 is +60uV and Input 2 is +20uV?

When considering the values of Input 1 and Input 2, the waveform can be analyzed based on the relationship between these two inputs. Input 1 is at +60 microvolts (uV) and Input 2 is at +20 microvolts (uV). The EEG equipment typically calculates the difference between the two inputs (Input 1 - Input 2) to represent the electrical activity of the brain.

In this case, when subtracting Input 2 from Input 1, the result is +40 microvolts (60 uV - 20 uV = 40 uV). A positive difference indicates that the waveform will deflect upward because the output reflects the higher potential of Input 1 in comparison to Input 2.

The interpretation that the waveform will deflect downward is incorrect as it would imply that Input 1 is less than Input 2, which is not the case here. Therefore, understanding the subtraction of inputs is critical in anticipating the deflection direction of the EEG waveform. The accurate representation of the differential input leads to an upward deflection on the recording.