RPSGT EXAM STUDY | Questions and Answers
Verified 100% Correct
What are the rules for scoring stage W? - ✔✔more than 50% of the epoch has alpha
rhythm over the occipital region; without discernible alpha and any of the following are
present a) eye blinks of 0.5 - 2 Hz; b) reading eye movements; c) irregular conjugate
rapid eye movements associated with normal or high chin muscle tone
What are the criteria for scoring a stage as N1? - ✔✔slow eye movements that are
reasonably regular and have an initial deflection usually lasting >500 msec; low
amplitude, mixed frequency (4-7 Hz) activity; vertex sharp waves; and sleep onset
What are the criteria for scoring a stage as N2? - ✔✔If one or both happen during the
first half of the epoch or the last half of the previous epoch. a) one or more k complexes
unassociated with arousals b) one or more trains of sleep spindles
What are the criteria for scoring stage N3? - ✔✔20% or more of epoch consists of
slow wave activity (0.5 - 2 Hz with peak to peak amplitude of >75 uV measured over the
frontal regions)
What is a vertex sharp wave? - ✔✔Sharply contoured waves with a duration of <0.5
seconds maximal over the central regions and distinguishable from the background
activity.
What is the criteria for scoring stage N1? - ✔✔attenuated alpha rhythm replaced by
low amplitude mixed frequency activity for more that 50% of epoch
How is sleep latency different in those that do not generate alpha rhythm? - ✔✔it is
shorter than normal
, What are the scoring criteria for stage R sleep? - ✔✔a) low amplitude, mixed
frequency EEG; b) low chin EMG tone; c) rapid eye movements
What are the rules for stage N1 in patients that do not generate alpha? - ✔✔4-7 Hz
activity with slowing background frequencies by at least 1 Hz from Wake, vertex sharp
waves and slow eye movements
What kind of eye movements are typical in N3 sleep? - ✔✔eye movements are not
typically seen during stage N3 sleep
What are some characteristics of stage R sleep? - ✔✔rapid eye movements, low chin
EMG tone; sawtooth waves in 2-6 Hz over central head regions, often preceding a burst
of rapid eye movements; transient muscle activity
What is the rule that defines the continuation of stage N2 sleep? - ✔✔Continue to
score epochs with low amplitude, mixed frequency EEG activity without K complexes or
sleep spindles as stage N2 if they are preceded by a) K complexes unassociated with
arousals or b) sleep spindles
What criteria define the end of a period of stage N2 sleep? - ✔✔End stage N2 sleep
when 1 of the following occur: a) transition to stage W; b) an arousal changes it to stage
N1 until a K complex unassociated with an arousal or a sleep spindle occurs; c) a major
body movement followed by slow eye movements and low amplitude mixed frequency
EEG without nonarousal associated K complexes or sleep spindles; d) transition to stage
N3; e) transition to stage R.
What is the rule that defines the continuation of a period of stage R sleep? -
✔✔Continue to score stage R sleep, even in the absence of rapid eye movements, for
epochs following 1 or more epochs of stage R if the EEG continues to show low
amplitude mixed frequency activity without K complexes or sleep spindles and the chin
EMG tone remains low.
Verified 100% Correct
What are the rules for scoring stage W? - ✔✔more than 50% of the epoch has alpha
rhythm over the occipital region; without discernible alpha and any of the following are
present a) eye blinks of 0.5 - 2 Hz; b) reading eye movements; c) irregular conjugate
rapid eye movements associated with normal or high chin muscle tone
What are the criteria for scoring a stage as N1? - ✔✔slow eye movements that are
reasonably regular and have an initial deflection usually lasting >500 msec; low
amplitude, mixed frequency (4-7 Hz) activity; vertex sharp waves; and sleep onset
What are the criteria for scoring a stage as N2? - ✔✔If one or both happen during the
first half of the epoch or the last half of the previous epoch. a) one or more k complexes
unassociated with arousals b) one or more trains of sleep spindles
What are the criteria for scoring stage N3? - ✔✔20% or more of epoch consists of
slow wave activity (0.5 - 2 Hz with peak to peak amplitude of >75 uV measured over the
frontal regions)
What is a vertex sharp wave? - ✔✔Sharply contoured waves with a duration of <0.5
seconds maximal over the central regions and distinguishable from the background
activity.
What is the criteria for scoring stage N1? - ✔✔attenuated alpha rhythm replaced by
low amplitude mixed frequency activity for more that 50% of epoch
How is sleep latency different in those that do not generate alpha rhythm? - ✔✔it is
shorter than normal
, What are the scoring criteria for stage R sleep? - ✔✔a) low amplitude, mixed
frequency EEG; b) low chin EMG tone; c) rapid eye movements
What are the rules for stage N1 in patients that do not generate alpha? - ✔✔4-7 Hz
activity with slowing background frequencies by at least 1 Hz from Wake, vertex sharp
waves and slow eye movements
What kind of eye movements are typical in N3 sleep? - ✔✔eye movements are not
typically seen during stage N3 sleep
What are some characteristics of stage R sleep? - ✔✔rapid eye movements, low chin
EMG tone; sawtooth waves in 2-6 Hz over central head regions, often preceding a burst
of rapid eye movements; transient muscle activity
What is the rule that defines the continuation of stage N2 sleep? - ✔✔Continue to
score epochs with low amplitude, mixed frequency EEG activity without K complexes or
sleep spindles as stage N2 if they are preceded by a) K complexes unassociated with
arousals or b) sleep spindles
What criteria define the end of a period of stage N2 sleep? - ✔✔End stage N2 sleep
when 1 of the following occur: a) transition to stage W; b) an arousal changes it to stage
N1 until a K complex unassociated with an arousal or a sleep spindle occurs; c) a major
body movement followed by slow eye movements and low amplitude mixed frequency
EEG without nonarousal associated K complexes or sleep spindles; d) transition to stage
N3; e) transition to stage R.
What is the rule that defines the continuation of a period of stage R sleep? -
✔✔Continue to score stage R sleep, even in the absence of rapid eye movements, for
epochs following 1 or more epochs of stage R if the EEG continues to show low
amplitude mixed frequency activity without K complexes or sleep spindles and the chin
EMG tone remains low.
