Sleep study montage setup, basic sleep stage scoring, and common sleep disorder recognition tested on polysomnographic technologist certification exams.
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- What does the abbreviation PSG stand for in a sleep lab?
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Polysomnography- What is the AASM recommended central EEG derivation for routine sleep stage scoring?
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C4-M1 (with C3-M2 as backup)- In PSG electrode nomenclature, what do M1 and M2 refer to?
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The left and right mastoid reference electrodes- Where is the E1 (left) EOG electrode placed?
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1 cm below and 1 cm lateral to the outer canthus of the left eye- Which muscle is used for the chin EMG channel in a standard PSG montage?
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The submentalis (mentalis) muscle- Which muscle is used for leg EMG electrode placement in PSG?
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The anterior tibialis- Which airflow sensor is preferred for detecting hypopneas?
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The nasal pressure transducer- Which airflow sensor is preferred for detecting apneas?
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The oronasal thermal sensor- What technology measures chest and abdominal respiratory effort in PSG?
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Respiratory inductance plethysmography (RIP)- What is the maximum recommended signal averaging time for pulse oximetry in PSG?
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3 seconds or less- What is the standard EEG low frequency (high-pass) filter setting in PSG?
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0.3 Hz- What is the standard EEG high frequency (low-pass) filter setting in PSG?
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35 Hz- What is the standard epoch length used for sleep stage scoring?
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30 seconds- List the five AASM sleep stages.
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W, N1, N2, N3, and R- What is the frequency range of the alpha rhythm?
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8 to 13 Hz
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