Machine calibrations verify the correct polarity, amplitude and time constant of each AC channel. They also check the filter and sensitivity settings. The patient fell asleep at 11:30 am during an MSLT test. The nap would end at 11:45 am, which is 15 minutes after the first epoch of sleep. When looking down, the E2 and E1 eye movement electrode signals on channels 7 and 8 respectively will move away from each other.

1. PSG 103 Michelle Sartelle, RPSGT, RRT Review for Final - PSG 101

3. J Sargeant Reynolds Community College

10. Let’s draw this question out! J Sargeant Reynolds Community College R-E2 L-E1 You can see when you draw it out that E2 is going to pick up a negative charge ( or upward deflection) and E1 is going to pick up a positive charge ( or downward deflection). So the question says that E2 is channel 7 and E1 is channel 8 . Draw this out also E2 channel 7 E1 channel 8

12. Artifact and it’s characteristics Let look at some of the most common types of artifact… J Sargeant Reynolds Community College

14. 60 Hz Artifact Going………………..Going………………..GONE Here the chin lead has fallen off J Sargeant Reynolds Community College

16. ECG Artifact J Sargeant Reynolds Community College

18. Movement Artifact

20. Sweat Artifact

23. Filters Effect Amplitude Low Filter J Sargeant Reynolds Community College

24. Low Frequency Response Curve J Sargeant Reynolds Community College Look at the line where the red arrow is pointing, that represents a 1 Hz LFF, Now look at the black brackets pointing to the Hz of a theta wave. You can see the LFF of 1Hz would not affect this wave. Now look at the blue bracket pointing to the Hz of a delta wave, you can see that this would be greatly affected by the LFF of 1Hz. In fact if you look where the star is you can see that a .5 Hz wave would be decreased by half the amplitude.