EEG board prep UPDATED ACTUAL
Questions and CORRECT Answers
Mu Rhythm - CORRECT ANSWER - -c3/c4 region
-7-11Hz
-does not block with eye opening
-easy to see with eyes open
-blocks unilaterally with contralateral hand
-asymmetrical and asynchronous
-NORMAL
Beta - CORRECT ANSWER - ->14 HZ
-detected during wakefulness, enhanced during drowsiness, and decreased in deeper sleep
-seen on barbiturates and benzodiazepines
Lambda waves - CORRECT ANSWER - -NORMAL, awake
-sharp waves occurring in occipital region (o1/o2) during wakefulness
-visually scanning a picture in a lit room
-physiological, eyes OPEN
-saccadic eye movement
-4-6hz
Small sharp spikes / BETS - CORRECT ANSWER - -occurs in stage 1/stage 2
-peaks at 30-60 years
-temporal region
-occurs sporadically and short duration
-NORMAL benign variant
,Wicket Spikes - CORRECT ANSWER - -Single spike or 6-11 hz Mu like shape seen in
drowsiness and light sleep.
-mid temporal region
-seen in adults over 30
-NORMAL benign variant
14&6hz positive spikes - CORRECT ANSWER - -posterior/temporal region (t5/t6)
-normal benign variant
-light sleep
-best seen in referential montage
-runs last less than 2 seconds
-seen in a lot of adolescents
sleep spindles - CORRECT ANSWER - -11-14hz , 1/2 second duration
-central regions
-asynchrony is abnormal after 2years old
-stage 2 sleep
Hypnagogic Hypersynchrony - CORRECT ANSWER - -2-6years old
-central/frontal regions
-paroxysmal bursts high voltage, 3-4.5hz
-normal variant of drowsiness
Dilantin toxicity - CORRECT ANSWER - ataxia (loss of control of body muscles)
Laplacian montage - CORRECT ANSWER - -source reference deviation
-looks at only the electrodes that are closest to the point of interest
-emphasizes localized waveforms
, deja vu - CORRECT ANSWER - -complex partial sz
-automatisms/impaired consciousness
extreme spindles - CORRECT ANSWER - -found in MR (mental retardation) patients
-high voltage, anterior dominant
-generalized
OIRDA (Occipital Intermittent Rhythmic Delta Activity) - CORRECT ANSWER --
encephalopathy eeg pattern most associated with children
-high amplitude, saw toothed, and reactive to eye opening
Rolandic Spikes - CORRECT ANSWER - -seen in children
-cento/temporal
-seen in benign rolandic epilepsy
FIRDA - CORRECT ANSWER - -Frontal Intermittent Rhythmic Delta Activity
-reacts to stimulation
-2-3hz
-rhythmic
-awake adult eeg
Atonic seizure (drop attack) - CORRECT ANSWER - generalized seizure characterized by
sudden loss of muscle tone and strength; may cause the head to drop suddenly, objects to fall
from the hands, or the legs to lose strength, with falling and potential injury
Tonic seizure - CORRECT ANSWER - Muscle stiffness, rigidity
Questions and CORRECT Answers
Mu Rhythm - CORRECT ANSWER - -c3/c4 region
-7-11Hz
-does not block with eye opening
-easy to see with eyes open
-blocks unilaterally with contralateral hand
-asymmetrical and asynchronous
-NORMAL
Beta - CORRECT ANSWER - ->14 HZ
-detected during wakefulness, enhanced during drowsiness, and decreased in deeper sleep
-seen on barbiturates and benzodiazepines
Lambda waves - CORRECT ANSWER - -NORMAL, awake
-sharp waves occurring in occipital region (o1/o2) during wakefulness
-visually scanning a picture in a lit room
-physiological, eyes OPEN
-saccadic eye movement
-4-6hz
Small sharp spikes / BETS - CORRECT ANSWER - -occurs in stage 1/stage 2
-peaks at 30-60 years
-temporal region
-occurs sporadically and short duration
-NORMAL benign variant
,Wicket Spikes - CORRECT ANSWER - -Single spike or 6-11 hz Mu like shape seen in
drowsiness and light sleep.
-mid temporal region
-seen in adults over 30
-NORMAL benign variant
14&6hz positive spikes - CORRECT ANSWER - -posterior/temporal region (t5/t6)
-normal benign variant
-light sleep
-best seen in referential montage
-runs last less than 2 seconds
-seen in a lot of adolescents
sleep spindles - CORRECT ANSWER - -11-14hz , 1/2 second duration
-central regions
-asynchrony is abnormal after 2years old
-stage 2 sleep
Hypnagogic Hypersynchrony - CORRECT ANSWER - -2-6years old
-central/frontal regions
-paroxysmal bursts high voltage, 3-4.5hz
-normal variant of drowsiness
Dilantin toxicity - CORRECT ANSWER - ataxia (loss of control of body muscles)
Laplacian montage - CORRECT ANSWER - -source reference deviation
-looks at only the electrodes that are closest to the point of interest
-emphasizes localized waveforms
, deja vu - CORRECT ANSWER - -complex partial sz
-automatisms/impaired consciousness
extreme spindles - CORRECT ANSWER - -found in MR (mental retardation) patients
-high voltage, anterior dominant
-generalized
OIRDA (Occipital Intermittent Rhythmic Delta Activity) - CORRECT ANSWER --
encephalopathy eeg pattern most associated with children
-high amplitude, saw toothed, and reactive to eye opening
Rolandic Spikes - CORRECT ANSWER - -seen in children
-cento/temporal
-seen in benign rolandic epilepsy
FIRDA - CORRECT ANSWER - -Frontal Intermittent Rhythmic Delta Activity
-reacts to stimulation
-2-3hz
-rhythmic
-awake adult eeg
Atonic seizure (drop attack) - CORRECT ANSWER - generalized seizure characterized by
sudden loss of muscle tone and strength; may cause the head to drop suddenly, objects to fall
from the hands, or the legs to lose strength, with falling and potential injury
Tonic seizure - CORRECT ANSWER - Muscle stiffness, rigidity
