This quiz focuses on recognizing and correcting artifacts in polysomnography. It assesses skills in EEG interpretation, troubleshooting signal interference, and optimizing sleep study recordings. Essential for technicians in sleep medicine and neurophysiology.
Importance of electrode channel in scoring
Ease at which patient falls asleep
Skill at fixing problem without waking patient
All of the above
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Impedance check
Reducing high filter
Recalibrate channel
Signal average reference electrodes to the channel in question
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Signal contamination or bridging
Automatic common mode rejection
Outside signal interference
Excessive conductive gel on the patient
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Muscle
Popping
Respiratory
Cardio-ballistic
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Muscle
Respiratory
Sweat
Pen blocking
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Pressure against the electrode
Electrode loosing contact with scalp surface
Poor ground connection
Both A and C
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Using the filters
Use of the sensitivity or gain control
60Hz filter application
Passing input signals through differential amplifiers
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Re-reference the channel showing the artifact to a back-up reference electrode
Re-reference the channel showing artifact by changing the input signal derivation to a back-up exploring electrode
Eliminate the artifact by double-referencing the input signal derivation
Eliminate the artifact by reducing the high frequency filter to 15Hz
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Manipulation of low and high filters
Applying 60Hz notch filters to the artifact channels
Changing the input signal derivations
Temporarily manipulating amplifier sensitivity or gain on the channels by the artifact
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Equal voltages for equal EKG conduction
Increased conduction due to arms at heart level
Voltages differences resulting from increased electrode distances
None of the above
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Reducing 60Hz artifact in EOGs
Reducing low frequency artifact in EEG channels
Reduce EKG artifact in EEG and EOG Channels
All of the above
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Quiz Review Timeline (Updated): Mar 21, 2023 +
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