RPSGT exam (need to work on) Questions with Correct Answers
(Grade A+)
Question 1: How is electrical current calculated?
Answer: Current (I) equals Voltage (V) divided by Resistance (R) I=V/R
Question 2: What is the difference between an AC signal and a DC signal ?
Answer: AC signals can alternate quickly between positive and negative voltages, whereas DC signals
change slowly and range from O to 1V.
Question 3: A 10uv signal is de- tected by the explor- ing electrode (G1) at the same time as a 5uv
signal is detected by the reference electrode (G2). What is the output voltage?
Answer: 5uv
Question 4: What is the difference between an AC signal and a DC signal
Answer: AC signals can alternate quickly between positive and negative voltages, while DC signals change
slowly and range from 0-1V.
Question 5: What is the difference between a thermistor and a thermocouple
Answer: Thermocouples detect the rate of temperature change by using two dissimilar metals that are
sensitive to temperature change. Thermistors use a wheatstone bridge circuit to amplify the ditterence in
temperature between expired air and room air.
Question 6: The EEG and EOG chan- nels are difficult to visu- alize because of a peri- odic single fast
wave ap- proximately every sec- ond. What is the likely cause and appropriate course of action?
Answer: This likely represents an EKG artifact and can be best corrected by repositioning the M1 and M2
electrodes higher up to the earlobes
Question 7: What is the recom- mended HFF setting EOG channels?
Answer: 35Hz for
Question 8: What is the recom- mended LFF setting for the SPO2 channel?
Answer: The SpO2 channel is a DC channel. Therefore, no filters are set for this channel.
Page 1
,Question 9: What is the recom- mended LFF for EEG channels ?
Answer: 0.3Hz
Question 10: What is the time con- stant?
Answer: The amount of time for a calibration wave to fall from its highest point, or peak, to 37% of the
peak. This is also referred to as fall time
Question 11: Increasing the sensi- tivity setting from 10 UVMM 20 UVMM will what to the
appearance of the wave?
Answer: Cut height of the wave in half do
Question 12: What is the recom- mended sampling rate for EEG's EOG, EKG, and EMGS
Answer: 500hz
Question 13: What weight form char- acteristic is directly af- fected by the voltage a input signal
Answer: Amplitude of
Question 14: When looking at a cal- ibration wave, what is the rise time?
Answer: The amount of time it takes for the wave to travel from its baseline to 63% of its peak. This is
usually measured in hundredths of a second.
Question 15: What filter directly im- pacts Fall Time?
Answer: The low frequency filter
Question 16: During the night, the tech notice is that the C3 channel appears slightly darker than the
other EEG channels. What should she do first?
Answer: Run an impedance check. If the impedance in this channel is higher than 5 Kohms, the electrode
should be reapplied or replaced
Question 17: During physiologic cal- ibrations the EEG & EOG channels present a high amplitude
ex- tremely slow wave arti- fact what is the most ap- propriate course of ac- tion?
Answer: Take steps to correct sweat artifact, including cooling the patient and replacing the ground lead.
Page 2
, Question 18: What should be done during a CPAP titration if central apnea persist
Answer: Decrease CPAP or switch to bi level according to lab protocol.
Question 19: What is the frequency range for sleep spin- dles?
Answer: 11-16Hz
Question 20: What is the amplitude requirement for slow waves in N3?
Answer: 75uV
Question 21: What are the infant sleep stages?
Answer: Stage wake (W), stage N (NREM), and stage R (REM)
Question 22: Wha stage is this ?
Answer: N1
Question 23: What is the frequency range for slow waves in N3?
Answer: 0.5-2Hz
Question 24: What is the amplitude requirement for a K complex?
Answer: There is no amplitude requirement for a K complex
Question 25: In what channels are Al- pha waves seen most prominently?
Answer: Occipital channels (O1 and O2)
Page 3
(Grade A+)
Question 1: How is electrical current calculated?
Answer: Current (I) equals Voltage (V) divided by Resistance (R) I=V/R
Question 2: What is the difference between an AC signal and a DC signal ?
Answer: AC signals can alternate quickly between positive and negative voltages, whereas DC signals
change slowly and range from O to 1V.
Question 3: A 10uv signal is de- tected by the explor- ing electrode (G1) at the same time as a 5uv
signal is detected by the reference electrode (G2). What is the output voltage?
Answer: 5uv
Question 4: What is the difference between an AC signal and a DC signal
Answer: AC signals can alternate quickly between positive and negative voltages, while DC signals change
slowly and range from 0-1V.
Question 5: What is the difference between a thermistor and a thermocouple
Answer: Thermocouples detect the rate of temperature change by using two dissimilar metals that are
sensitive to temperature change. Thermistors use a wheatstone bridge circuit to amplify the ditterence in
temperature between expired air and room air.
Question 6: The EEG and EOG chan- nels are difficult to visu- alize because of a peri- odic single fast
wave ap- proximately every sec- ond. What is the likely cause and appropriate course of action?
Answer: This likely represents an EKG artifact and can be best corrected by repositioning the M1 and M2
electrodes higher up to the earlobes
Question 7: What is the recom- mended HFF setting EOG channels?
Answer: 35Hz for
Question 8: What is the recom- mended LFF setting for the SPO2 channel?
Answer: The SpO2 channel is a DC channel. Therefore, no filters are set for this channel.
Page 1
,Question 9: What is the recom- mended LFF for EEG channels ?
Answer: 0.3Hz
Question 10: What is the time con- stant?
Answer: The amount of time for a calibration wave to fall from its highest point, or peak, to 37% of the
peak. This is also referred to as fall time
Question 11: Increasing the sensi- tivity setting from 10 UVMM 20 UVMM will what to the
appearance of the wave?
Answer: Cut height of the wave in half do
Question 12: What is the recom- mended sampling rate for EEG's EOG, EKG, and EMGS
Answer: 500hz
Question 13: What weight form char- acteristic is directly af- fected by the voltage a input signal
Answer: Amplitude of
Question 14: When looking at a cal- ibration wave, what is the rise time?
Answer: The amount of time it takes for the wave to travel from its baseline to 63% of its peak. This is
usually measured in hundredths of a second.
Question 15: What filter directly im- pacts Fall Time?
Answer: The low frequency filter
Question 16: During the night, the tech notice is that the C3 channel appears slightly darker than the
other EEG channels. What should she do first?
Answer: Run an impedance check. If the impedance in this channel is higher than 5 Kohms, the electrode
should be reapplied or replaced
Question 17: During physiologic cal- ibrations the EEG & EOG channels present a high amplitude
ex- tremely slow wave arti- fact what is the most ap- propriate course of ac- tion?
Answer: Take steps to correct sweat artifact, including cooling the patient and replacing the ground lead.
Page 2
, Question 18: What should be done during a CPAP titration if central apnea persist
Answer: Decrease CPAP or switch to bi level according to lab protocol.
Question 19: What is the frequency range for sleep spin- dles?
Answer: 11-16Hz
Question 20: What is the amplitude requirement for slow waves in N3?
Answer: 75uV
Question 21: What are the infant sleep stages?
Answer: Stage wake (W), stage N (NREM), and stage R (REM)
Question 22: Wha stage is this ?
Answer: N1
Question 23: What is the frequency range for slow waves in N3?
Answer: 0.5-2Hz
Question 24: What is the amplitude requirement for a K complex?
Answer: There is no amplitude requirement for a K complex
Question 25: In what channels are Al- pha waves seen most prominently?
Answer: Occipital channels (O1 and O2)
Page 3
