Free RST Instrumentation, Equipment & Data Acquisition Questions and Answers

Question 1

Which electrode placement is critical for measuring brain wave activity during polysomnography?

Accepted Answer

C3-A2 and O2-A1

Answer

Fp1-Fp2

Answer

T3-T4

Answer

Pz-Oz

Question 2

What is the purpose of a thermistor in sleep studies?

Accepted Answer

To detect airflow (oral/nasal breathing)

Answer

To measure blood oxygen levels

Answer

To monitor core body temperature

Answer

To record muscle tone

Question 3

Which sensor is used to measure respiratory effort during polysomnography?

Accepted Answer

RIP belts

Answer

Pulse oximeter

Answer

ECG electrodes

Answer

Chin EMG

Question 4

What does the submental EMG channel primarily assess?

Accepted Answer

Muscle tone for sleep staging

Answer

Cardiac activity

Answer

Eye movements

Answer

Respiratory effort

Question 5

Which parameter is measured by a pulse oximeter during a sleep study?

Accepted Answer

SpO2 (oxygen saturation)

Answer

End-tidal CO2

Answer

Blood pressure

Answer

Heart rate variability

Question 6

What is the function of EOG (electrooculogram) electrodes in PSG?

Accepted Answer

To record eye movements for REM detection

Answer

To measure brain wave activity

Answer

To assess muscle tone

Answer

To monitor respiratory rate

Question 7

Which of the following is true about nasal pressure transducers?

Accepted Answer

They detect airflow via pressure fluctuations

Answer

They measure oxygen saturation

Answer

They replace RIP belts for effort measurement

Answer

They are used only for CPAP titration

Question 8

What is the recommended sampling rate for EEG channels in digital PSG?

Accepted Answer

200 Hz or higher

Answer

50 Hz

Answer

100 Hz

Answer

10 Hz

Question 9

Which device would you use to detect limb movements during sleep?

Accepted Answer

Leg EMG electrodes

Answer

Thermocouple

Answer

Piezoelectric sensors

Answer

ECG leads