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EEG BOARD EXAM QUESTIONS AND ANSWERS
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EEG BOARD EXAM QUESTIONS AND ANSWERS
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EEG BOARD EXAM QUESTIONS ANDANSWERS
SSS/BETS ii(small iisharp iiwaves ii/ iibenign iiepileptiform iitransients iiof iisleep) ii- iiAnswers
ii-Low iivoltage, iishort iiduration, iidiphasic iispikes iiwith iia iisteep iidescending iilimb.
iiUsually iiseen iiin iidrowsiness iiand iilight iisleep.
SREDA ii(subclinical iirhythmic iielectrographic iidischarges iiof iiadults) ii- iiAnswers ii-
Sharply iicontoured iitheta iiactivity iiin iithe iiposterior iihead iiregion. iiA iinormal iivariant iiin
iiolder iiadults iiduring iiwakefullness.
14 iiand ii6 iipositive iispikes ii- iiAnswers ii-1-2 iiseconds iiof iisharply iicontoured iidischarges
iiin iithe iiposterior iihead iiregions iiin iilight iisleep. iiPresents iiin iiadolescents.
6 iihz iispike iiand iiwave ii- iiAnswers ii-Midparietal iilow iiamplitude iidischarges. iiOccurs iiin
iiyoung iiadults iiin iidrowsiness iiand iidisappears iiin iisleep.
My iirhythm ii- iiAnswers ii-Oscillating ii10 iihz iiwaves iiseen iiin iileads iioverylying iithe
iisenserimotor iicortex iiin iithe iiabsence iiof iimovement. iiIf iia iipatient iimoves iior iithinks
iiabout iimoving iitheir iicontralateral iilimb, iithis iirhythm iiwill iibe iisuppressed.
Wickets ii- iiAnswers ii-Symmetric iimonophasic iisharp iiwave iioccuring iipredominantly iiin
iiolder iiadults iiduring iilight iisleep iiin iitemporal iileads iiwithout iidisruption iiof iithe
iibackground.
3 iihz iislow iiwave iiactivity ii- iiAnswers ii-3 iihz iiwaves iiwithout iian iiassociated iispike iiwhich
iican iibe iiseen iiduring iihyperventilation iiin iichildhood
RTTBD ii(rhythmic iitemporal iitheta iibursts iiof iidrowsiness) ii- iiAnswers ii-5-6 iihz iirhythmic
iiwaves iiin iithe iitemporal iilobe. iiSeen iiin iiyoung iiadults iiduring iidrowsiness.
Breach iirhythm ii- iiAnswers ii-Unilateral iihigh iivoltage iiiregular iiwave iirhythms iidue iito
iialteration iiof iiconductance iicommonly iiseen iiin iipatients iiwith iia iiskull iidefect.
Anterior iieye iiblinks ii(bells iiphenomenon) ii- iiAnswers ii-Positive iidownward iideflection,
iimaximal iiin iithe iifrontopolar iileads, iifollowed iiby iia iinegative iideflection iifrom iieye
iiopening. iiDisappears iiin iisleep.
EKG ii- iiAnswers ii-Rhythmic iielectropositive iidischarges iiin iione iior iimultiple iileads, iimost
iioften iiin iithe iioccipital iileads. iiTime iilocked iiand iisynchronous iiwith iithe iiEKG iitracing.
, Pulse ii- iiAnswers ii-Rhythmic iislow iiwaves iiin iia iisingle iilead iidue iito iia iiclose iipulsating
iivessel. iiTime iilocked iibut iidelayed iiafter iieach iiQRS iisample.
Lateral iieye iimovements ii- iiAnswers ii-Very iislow iiout iiof iiphase iiderivations iiinvolving
iianterior iielectrodes iidue iito iimovement iiof iithe iipositively iicharged iicornea. iiBest
iiappreciated iiin iidrowsiness iiand iiearly iisleep iiwhen iipatient iiexperience iirolling iieye
iimovements.
Muscle ii- iiAnswers ii-Extremely iihigh iifrequency iiwaves iioften iigenerated iifrom iithe
iifrontalis iiand iitemporalis iimuscles. iiUsually iispares iicentral iileads. iiDisappears iiin
iisleep.
Glossokinetic ii- iiAnswers ii-Diffuse, iilow iifrequency iidischarges iiproduced iiby
iimovements iiof iithe iinegative iitip iiof iithe iitongue. iiCan iibe iiinduced iiby iisaying ii"la iila iila
iila", iichewing, iior iisucking.
Electrode iipop ii- iiAnswers ii-Single iior iimultiple iisharp iiwaves iilocalized iito iia iisingle
iielectrode iiwithout iia iisurrounding iifield. iiDisappears iiby iireapplying iian iielectrode.
GRDA ii(generalized iirhythmic iidelta iiactivity) ii- iiAnswers ii-Generalized iiin iiall iileads,
iitypically iisignifies iiglobal iicerebral iidysfunction, iisuch iias iiin iia iisevere iiencephalopathy,
iibut iiis iinot iito iibe iia iirisk iifactor iifor iiseizure iior iiseizure iitendency.
Frontally iidominant iiGRDA ii- iiAnswers ii-Can iibe iiseen iiwith iia iivariety iiof iipathologies
iiincluding iiposterior iifossa iilesions, iiintracranial iilesions, iiand iiincreased iiintraventricular
iipressure.
LRDA ii(lateralized iirhythmic iidelta) ii- iiAnswers ii-Can iibe iiseen iiwith iifocal iilesions iisuch
iia iihemorrhage, iitumor, iior iistroke. iiIs iiassociated iiwith iiincreased iiseizure iirisk/seizure
iitendency.
LPDs ii(Lateralized iiperiodic iidischarges) ii- iiAnswers ii-Often iiseen iiwith iifocal iiacute iior
iisubacute iicerebral iidysfunction, iisuch iias iiwith iiherpes iisimplex iienchephalitis, iistroke,
iiabscess, iior iisubdural iihematoma.
GPDs ii(Generalized iiperiodic iidischarges) ii- iiAnswers ii-Felt iito iihave iihighest iiseizure
iitendency iiof iithe ii'ictal-interictal' iipatterns. iiIf iiseen iiclinically iiwith iirapidly iiprogressive
iidementia iiit iican iibe iistrongly iisuggestive iiof iiCreutzfeldt-Jakob iiDisease.
End iistage iiliver iidisease ii- iiAnswers ii-This iidisease iican iipresent iiwith
iihyperammonemia iiand iigeneralized iiperiodic iiwaves iiwith iitriphasic iimorphology. iiThey
iiare iibilaterally iisynchronous iiand iiusually iifrontally iipredominant iiand iiexhibit iithree
iiphases ii(i.e. iinegative, iipositive, iinegative). iiTriphasic iiwaves iican iialso iibe iiseen iiin
iiESRD iiand iiother iiforms iiof iimetabolic iiencephalopathy.
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