EEG BOARD EXAM 2026 EXPERT
VERIFIED | ACE THE TEST
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) -
🧠ANSWER ✔✔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) -
🧠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.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Electrode pop - 🧠ANSWER ✔✔Single or multiple sharp waves localized to
a single electrode without a surrounding field. Disappears by reapplying an
electrode.
GRDA (generalized rhythmic delta activity) - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Can be seen with a variety of
pathologies including posterior fossa lesions, intracranial lesions, and
increased intraventricular pressure.
LRDA (lateralized rhythmic delta) - 🧠ANSWER ✔✔Can be seen with focal
lesions such a hemorrhage, tumor, or stroke. Is associated with increased
seizure risk/seizure tendency.
LPDs (Lateralized periodic discharges) - 🧠ANSWER ✔✔Often seen with
focal acute or subacute cerebral dysfunction, such as with herpes simplex
enchephalitis, stroke, abscess, or subdural hematoma.
GPDs (Generalized periodic discharges) - 🧠ANSWER ✔✔Felt to have
highest seizure tendency of the 'ictal-interictal' patterns. If seen clinically
VERIFIED | ACE THE TEST
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) -
🧠ANSWER ✔✔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) -
🧠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.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Electrode pop - 🧠ANSWER ✔✔Single or multiple sharp waves localized to
a single electrode without a surrounding field. Disappears by reapplying an
electrode.
GRDA (generalized rhythmic delta activity) - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Can be seen with a variety of
pathologies including posterior fossa lesions, intracranial lesions, and
increased intraventricular pressure.
LRDA (lateralized rhythmic delta) - 🧠ANSWER ✔✔Can be seen with focal
lesions such a hemorrhage, tumor, or stroke. Is associated with increased
seizure risk/seizure tendency.
LPDs (Lateralized periodic discharges) - 🧠ANSWER ✔✔Often seen with
focal acute or subacute cerebral dysfunction, such as with herpes simplex
enchephalitis, stroke, abscess, or subdural hematoma.
GPDs (Generalized periodic discharges) - 🧠ANSWER ✔✔Felt to have
highest seizure tendency of the 'ictal-interictal' patterns. If seen clinically
