The E2 electrode is placed out and up from the outer canthus of the right eye, and E1 is placed out and down from the outer canthus of the left eye. If the E2 channel on the PSG is channel 4, and E1 is channel 5, what will the waves on these channels do when the patient looks up?
Move toward each other
Both move up
Both move down
Move away from each other
What is the purpose of the low-frequency filter?
Eliminating undesired fast frequencies
Eliminating undesired slow frequencies
Adjusting signal amplitude
Calibrating DC amplifiers
What should a technician do first to make sure the proper test is being performed?
Contact the physician
Review the chart for the physician's order
Ask the patient for a chief complaint
Perform physiological calibrations
The symbol "G1" represents
The exploring electrode
The reference electrode
The patient ground
The output of a differential amplifier to the PSG
If G1 receives a signal of -100 µV at the same time G2 receives a signal of -50 µV, what is the output signal?
-50 µV
+50 µV
-150 µV
+150 µV
