EEG BOARD EXAM COMPREHENSIVE TEST
PAPER QUESTIONS AND ANSWERS
◉ SREDA (subclinical rhythmic electrographic discharges of adults).
Answer: Sharply contoured theta activity in the posterior head
region. A normal variant in older adults during wakefullness.
◉ 14 and 6 positive spikes.
Answer: 1-2 seconds of sharply contoured discharges in the
posterior head regions in light sleep. Presents in adolescents.
◉ 6 hz spike and wave.
Answer: Midparietal low amplitude discharges. Occurs in young
adults in drowsiness and disappears in sleep.
◉ My rhythm.
Answer: 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.
◉ Wickets.
,Answer: 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.
Answer: 3 hz waves without an associated spike which can be seen
during hyperventilation in childhood
◉ RTTBD (rhythmic temporal theta bursts of drowsiness).
Answer: 5-6 hz rhythmic waves in the temporal lobe. Seen in young
adults during drowsiness.
◉ Breach rhythm.
Answer: Unilateral high voltage iregular wave rhythms due to
alteration of conductance commonly seen in patients with a skull
defect.
◉ Anterior eye blinks (bells phenomenon).
Answer: Positive downward deflection, maximal in the frontopolar
leads, followed by a negative deflection from eye opening.
Disappears in sleep.
◉ EKG.
, Answer: Rhythmic electropositive discharges in one or multiple
leads, most often in the occipital leads. Time locked and
synchronous with the EKG tracing.
◉ Pulse.
Answer: Rhythmic slow waves in a single lead due to a close
pulsating vessel. Time locked but delayed after each QRS sample.
◉ Lateral eye movements.
Answer: 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.
◉ Muscle.
Answer: Extremely high frequency waves often generated from the
frontalis and temporalis muscles. Usually spares central leads.
Disappears in sleep.
◉ Glossokinetic.
Answer: 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.
PAPER QUESTIONS AND ANSWERS
◉ SREDA (subclinical rhythmic electrographic discharges of adults).
Answer: Sharply contoured theta activity in the posterior head
region. A normal variant in older adults during wakefullness.
◉ 14 and 6 positive spikes.
Answer: 1-2 seconds of sharply contoured discharges in the
posterior head regions in light sleep. Presents in adolescents.
◉ 6 hz spike and wave.
Answer: Midparietal low amplitude discharges. Occurs in young
adults in drowsiness and disappears in sleep.
◉ My rhythm.
Answer: 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.
◉ Wickets.
,Answer: 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.
Answer: 3 hz waves without an associated spike which can be seen
during hyperventilation in childhood
◉ RTTBD (rhythmic temporal theta bursts of drowsiness).
Answer: 5-6 hz rhythmic waves in the temporal lobe. Seen in young
adults during drowsiness.
◉ Breach rhythm.
Answer: Unilateral high voltage iregular wave rhythms due to
alteration of conductance commonly seen in patients with a skull
defect.
◉ Anterior eye blinks (bells phenomenon).
Answer: Positive downward deflection, maximal in the frontopolar
leads, followed by a negative deflection from eye opening.
Disappears in sleep.
◉ EKG.
, Answer: Rhythmic electropositive discharges in one or multiple
leads, most often in the occipital leads. Time locked and
synchronous with the EKG tracing.
◉ Pulse.
Answer: Rhythmic slow waves in a single lead due to a close
pulsating vessel. Time locked but delayed after each QRS sample.
◉ Lateral eye movements.
Answer: 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.
◉ Muscle.
Answer: Extremely high frequency waves often generated from the
frontalis and temporalis muscles. Usually spares central leads.
Disappears in sleep.
◉ Glossokinetic.
Answer: 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.
