EEG BOARD EXAM QUESTIONS
AND ANSWERS 100% PASS
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) - ✔✔Low
voltage, short duration, diphasic spikes with a steep descending limb. Usually seen in
drowsiness and light sleep.
SREDA (subclinical rhythmic electrographic discharges of adults) - ✔✔Sharply
contoured theta activity in the posterior head region. A normal variant in older adults
during wakefullness.
14 and 6 positive spikes - ✔✔1-2 seconds of sharply contoured discharges in the
posterior head regions in light sleep. Presents in adolescents.
6 hz spike and wave - ✔✔Midparietal low amplitude discharges. Occurs in young
adults in drowsiness and disappears in sleep.
My rhythm - ✔✔Oscillating 10 hz waves seen in leads overylying the senserimotor
cortex in the absence of movement. If a patient moves or thinks about moving their
contralateral limb, this rhythm will be suppressed.
Katelyn Whitman, All Rights Reserved © 2025 1
,Wickets - ✔✔Symmetric monophasic sharp wave occuring predominantly in older
adults during light sleep in temporal leads without disruption of the background.
3 hz slow wave activity - ✔✔3 hz waves without an associated spike which can be seen
during hyperventilation in childhood
RTTBD (rhythmic temporal theta bursts of drowsiness) - ✔✔5-6 hz rhythmic waves in
the temporal lobe. Seen in young adults during drowsiness.
Breach rhythm - ✔✔Unilateral high voltage iregular wave rhythms due to alteration of
conductance commonly seen in patients with a skull defect.
Anterior eye blinks (bells phenomenon) - ✔✔Positive downward deflection, maximal in
the frontopolar leads, followed by a negative deflection from eye opening. Disappears
in sleep.
EKG - ✔✔Rhythmic electropositive discharges in one or multiple leads, most often in
the occipital leads. Time locked and synchronous with the EKG tracing.
Pulse - ✔✔Rhythmic slow waves in a single lead due to a close pulsating vessel. Time
locked but delayed after each QRS sample.
Lateral eye movements - ✔✔Very slow out of phase derivations involving anterior
electrodes due to movement of the positively charged cornea. Best appreciated in
drowsiness and early sleep when patient experience rolling eye movements.
Katelyn Whitman, All Rights Reserved © 2025 2
, Muscle - ✔✔Extremely high frequency waves often generated from the frontalis and
temporalis muscles. Usually spares central leads. Disappears in sleep.
Glossokinetic - ✔✔Diffuse, low frequency discharges produced by movements of the
negative tip of the tongue. Can be induced by saying "la la la la", chewing, or sucking.
Electrode pop - ✔✔Single or multiple sharp waves localized to a single electrode
without a surrounding field. Disappears by reapplying an electrode.
GRDA (generalized rhythmic delta activity) - ✔✔Generalized in all leads, typically
signifies global cerebral dysfunction, such as in a severe encephalopathy, but is not to
be a risk factor for seizure or seizure tendency.
Frontally dominant GRDA - ✔✔Can be seen with a variety of pathologies including
posterior fossa lesions, intracranial lesions, and increased intraventricular pressure.
LRDA (lateralized rhythmic delta) - ✔✔Can be seen with focal lesions such a
hemorrhage, tumor, or stroke. Is associated with increased seizure risk/seizure
tendency.
LPDs (Lateralized periodic discharges) - ✔✔Often seen with focal acute or subacute
cerebral dysfunction, such as with herpes simplex enchephalitis, stroke, abscess, or
subdural hematoma.
Katelyn Whitman, All Rights Reserved © 2025 3
AND ANSWERS 100% PASS
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) - ✔✔Low
voltage, short duration, diphasic spikes with a steep descending limb. Usually seen in
drowsiness and light sleep.
SREDA (subclinical rhythmic electrographic discharges of adults) - ✔✔Sharply
contoured theta activity in the posterior head region. A normal variant in older adults
during wakefullness.
14 and 6 positive spikes - ✔✔1-2 seconds of sharply contoured discharges in the
posterior head regions in light sleep. Presents in adolescents.
6 hz spike and wave - ✔✔Midparietal low amplitude discharges. Occurs in young
adults in drowsiness and disappears in sleep.
My rhythm - ✔✔Oscillating 10 hz waves seen in leads overylying the senserimotor
cortex in the absence of movement. If a patient moves or thinks about moving their
contralateral limb, this rhythm will be suppressed.
Katelyn Whitman, All Rights Reserved © 2025 1
,Wickets - ✔✔Symmetric monophasic sharp wave occuring predominantly in older
adults during light sleep in temporal leads without disruption of the background.
3 hz slow wave activity - ✔✔3 hz waves without an associated spike which can be seen
during hyperventilation in childhood
RTTBD (rhythmic temporal theta bursts of drowsiness) - ✔✔5-6 hz rhythmic waves in
the temporal lobe. Seen in young adults during drowsiness.
Breach rhythm - ✔✔Unilateral high voltage iregular wave rhythms due to alteration of
conductance commonly seen in patients with a skull defect.
Anterior eye blinks (bells phenomenon) - ✔✔Positive downward deflection, maximal in
the frontopolar leads, followed by a negative deflection from eye opening. Disappears
in sleep.
EKG - ✔✔Rhythmic electropositive discharges in one or multiple leads, most often in
the occipital leads. Time locked and synchronous with the EKG tracing.
Pulse - ✔✔Rhythmic slow waves in a single lead due to a close pulsating vessel. Time
locked but delayed after each QRS sample.
Lateral eye movements - ✔✔Very slow out of phase derivations involving anterior
electrodes due to movement of the positively charged cornea. Best appreciated in
drowsiness and early sleep when patient experience rolling eye movements.
Katelyn Whitman, All Rights Reserved © 2025 2
, Muscle - ✔✔Extremely high frequency waves often generated from the frontalis and
temporalis muscles. Usually spares central leads. Disappears in sleep.
Glossokinetic - ✔✔Diffuse, low frequency discharges produced by movements of the
negative tip of the tongue. Can be induced by saying "la la la la", chewing, or sucking.
Electrode pop - ✔✔Single or multiple sharp waves localized to a single electrode
without a surrounding field. Disappears by reapplying an electrode.
GRDA (generalized rhythmic delta activity) - ✔✔Generalized in all leads, typically
signifies global cerebral dysfunction, such as in a severe encephalopathy, but is not to
be a risk factor for seizure or seizure tendency.
Frontally dominant GRDA - ✔✔Can be seen with a variety of pathologies including
posterior fossa lesions, intracranial lesions, and increased intraventricular pressure.
LRDA (lateralized rhythmic delta) - ✔✔Can be seen with focal lesions such a
hemorrhage, tumor, or stroke. Is associated with increased seizure risk/seizure
tendency.
LPDs (Lateralized periodic discharges) - ✔✔Often seen with focal acute or subacute
cerebral dysfunction, such as with herpes simplex enchephalitis, stroke, abscess, or
subdural hematoma.
Katelyn Whitman, All Rights Reserved © 2025 3
