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ABPN Epilepsy study materials
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ABPN Epilepsy practice questions

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Question 1Basic Science Aspects of Epilepsy

Which ion carries the inward current responsible for the fast depolarizing phase of the neuronal action potential?

  1. Sodium Correct answer.
  2. Calcium
  3. Potassium
  4. Chloride

Explanation

Voltage-gated sodium channels open at threshold, and the resulting rapid Na+ influx produces the steep upstroke of the action potential. Potassium efflux later drives repolarization.

Question 2Basic Science Aspects of Epilepsy

Which neurotransmitter is the principal fast inhibitory transmitter in the mature mammalian cerebral cortex?

  1. Acetylcholine
  2. Dopamine
  3. Glutamate
  4. GABA Correct answer.

Explanation

GABA acting at GABA-A receptors opens chloride channels, producing fast inhibitory postsynaptic potentials in cortical circuits. Glutamate is the main excitatory transmitter.

Question 3Basic Science Aspects of Epilepsy

A seizure focus generated by a small cortical region that discharges abnormally because of a structural lesion is best described as which type of epilepsy?

  1. Reflex
  2. Idiopathic generalized
  3. Symptomatic focal Correct answer.
  4. Cryptogenic generalized

Explanation

A focal seizure arising from an identifiable structural lesion is termed symptomatic (or lesional) focal epilepsy. Idiopathic generalized epilepsies arise from presumed genetic mechanisms without a structural focus.

Question 4Basic Science Aspects of Epilepsy

Which EEG rhythm is typically seen over the occipital regions of an awake, relaxed adult with eyes closed?

  1. Mu rhythm
  2. Beta rhythm
  3. Theta rhythm
  4. Alpha rhythm Correct answer.

Explanation

The posterior dominant alpha rhythm (8–13 Hz) appears over occipital regions when a relaxed adult closes the eyes and attenuates with eye opening. Mu rhythm is central and motor-related.

Question 5Basic Science Aspects of Epilepsy

Which structure is the principal relay nucleus through which cortical and subcortical inputs reach the hippocampus via the fornix pathway?

  1. Mammillary body Correct answer.
  2. Caudate nucleus
  3. Thalamus
  4. Amygdala

Explanation

The mammillary bodies receive input via the fornix and project through the mammillothalamic tract, forming part of the circuit of Papez relevant to temporal lobe epilepsy. The amygdala is a separate temporal structure.

Question 6Basic Science Aspects of Epilepsy

Absence seizures are most strongly associated with which EEG pattern?

  1. Periodic lateralized discharges
  2. 3-Hz generalized spike-and-wave Correct answer.
  3. Temporal spike focus
  4. Hypsarrhythmia

Explanation

Typical absence seizures show bilateral, symmetric, synchronous 3-Hz spike-and-wave discharges on a normal background, correlating with impaired consciousness. Hypsarrhythmia and temporal spikes indicate other syndromes.

Question 7Basic Science Aspects of Epilepsy

Which receptor type is a ligand-gated ion channel that mediates fast synaptic transmission?

  1. Tyrosine kinase receptor
  2. Nuclear receptor
  3. G protein-coupled receptor
  4. Ionotropic receptor Correct answer.

Explanation

Ionotropic receptors open an intrinsic ion pore directly upon transmitter binding, producing rapid postsynaptic currents. Metabotropic and other receptor classes act through second messengers.

Question 8Basic Science Aspects of Epilepsy

Which cortical cell type is the principal source of excitatory glutamatergic projections within and out of the cerebral cortex?

  1. Pyramidal cell Correct answer.
  2. Basket cell
  3. Purkinje cell
  4. Astrocyte

Explanation

Pyramidal cells are the main excitatory projection neurons of the cortex and release glutamate. Interneurons such as basket cells are inhibitory and use GABA.

Question 9Basic Science Aspects of Epilepsy

A patient has seizures arising independently from both temporal lobes with documented bilateral independent temporal spikes. This pattern is best classified as which type of epilepsy?

  1. Generalized onset
  2. Benign rolandic
  3. Juvenile myoclonic
  4. Bitemporal focal Correct answer.

Explanation

Independent bilateral temporal foci indicate a multifocal (bitemporal) focal epilepsy rather than a generalized onset. Generalized epilepsies show bilateral synchronous onset from the start.

Question 10Basic Science Aspects of Epilepsy

A drug that blocks voltage-gated sodium channels in their inactivated state most directly reduces which neuronal property?

  1. High-frequency repetitive firing Correct answer.
  2. Axonal transport
  3. Resting membrane potential
  4. Synaptic vesicle release

Explanation

Use-dependent block of inactivated sodium channels preferentially suppresses sustained high-frequency firing while sparing normal low-frequency activity. This is the mechanism of several antiepileptic drugs.

Question 11Basic Science Aspects of Epilepsy

Which EEG feature most reliably distinguishes a generalized tonic-clonic seizure from a psychogenic nonepileptic event on a recorded spell?

  1. Muscle artifact
  2. Ictal tachycardia
  3. Generalized rhythmic epileptiform discharges Correct answer.
  4. Eye closure

Explanation

Generalized rhythmic epileptiform discharges during the event establish an electrographic seizure, whereas nonepileptic events lack such organized ictal rhythms. Muscle and movement artifact can accompany either.

Question 12Basic Science Aspects of Epilepsy

Which mechanism best explains why vigabatrin raises brain GABA concentrations?

  1. Blockade of GABA reuptake
  2. Increased glutamate decarboxylase activity
  3. Inhibition of GABA transaminase Correct answer.
  4. Direct activation of GABA-A receptors

Explanation

Vigabatrin irreversibly inhibits GABA transaminase, the enzyme that degrades GABA, thereby increasing synaptic GABA. It does not act at receptors or transporters.

Question 13Basic Science Aspects of Epilepsy

The K-complex, a normal EEG waveform seen in stage N2 sleep, is best described as which of the following?

  1. A sharp occipital transient
  2. A brief high-amplitude negative-then-positive slow wave Correct answer.
  3. A 3-Hz spike-and-wave discharge
  4. A 14-Hz spindle burst

Explanation

K-complexes are high-amplitude biphasic slow waves, often followed by sleep spindles, marking stage N2 sleep. They are normal and must not be mistaken for epileptiform discharges.

Question 14Basic Science Aspects of Epilepsy

A hippocampal pyramidal neuron loses its normal afterhyperpolarization after a burst of action potentials. Which consequence is most likely?

  1. Reduced synaptic release
  2. Loss of axonal myelination
  3. Increased tendency to repetitive bursting Correct answer.
  4. Hyperpolarized resting potential

Explanation

The afterhyperpolarization is a calcium-activated potassium conductance that limits repetitive firing. Its loss prolongs depolarization and predisposes neurons to burst, a mechanism implicated in epileptogenesis.

Question 15Basic Science Aspects of Epilepsy

Which imaging finding is most characteristic of mesial temporal sclerosis on MRI?

  1. Hippocampal atrophy with T2 hyperintensity Correct answer.
  2. Ring-enhancing frontal lesion
  3. Diffuse white matter calcification
  4. Bilateral basal ganglia hyperintensity

Explanation

Mesial temporal sclerosis produces hippocampal volume loss and increased T2/FLAIR signal, often with loss of internal architecture. These findings correlate with temporal lobe epilepsy.

Question 16Basic Science Aspects of Epilepsy

Which receptor subtype mediates the slow, calcium-permeable component of glutamatergic transmission important in synaptic plasticity and excitotoxicity?

  1. GABA-B
  2. AMPA
  3. NMDA Correct answer.
  4. Kainate

Explanation

NMDA receptors are calcium-permeable, voltage-dependent, and central to long-term potentiation and excitotoxic injury. AMPA and kainate receptors mediate faster, largely sodium-driven currents.

Question 17Basic Science Aspects of Epilepsy

A child has frequent brief staring spells with 3-Hz generalized spike-and-wave on EEG. Which pathophysiologic mechanism best fits this syndrome?

  1. Hippocampal sclerosis
  2. Focal cortical dysplasia
  3. Peripheral nerve hyperexcitability
  4. Thalamocortical oscillatory circuit Correct answer.

Explanation

Absence seizures arise from abnormal thalamocortical oscillations involving T-type calcium currents in thalamic relay neurons and cortical feedback. This generates the bilateral synchronous spike-and-wave pattern.

Question 18Basic Science Aspects of Epilepsy

Which statement best describes the role of the blood-brain barrier in antiepileptic drug therapy?

  1. It excludes all protein-bound drugs
  2. It permits only lipid-soluble or transporter-mediated molecules to enter brain Correct answer.
  3. It actively pumps all drugs into the brain
  4. It has no influence on drug distribution

Explanation

The blood-brain barrier restricts entry of hydrophilic compounds and uses efflux transporters, so lipid solubility and transporter interactions strongly influence brain drug levels. Protein binding affects free fraction but is not an absolute barrier criterion.

Question 19Basic Science Aspects of Epilepsy

Which EEG pattern is considered an interictal epileptiform discharge?

  1. POSTS
  2. Spike-and-slow-wave complex Correct answer.
  3. Mu rhythm
  4. Lambda waves

Explanation

Spikes, polyspikes, and spike-and-slow-wave complexes are interictal epileptiform discharges reflecting abnormal neuronal synchrony. The other listed patterns are benign normal variants.

Question 20Basic Science Aspects of Epilepsy

A neuron's extracellular potassium concentration rises during intense seizure activity. What is the most direct effect on that neuron?

  1. Depolarization and increased excitability Correct answer.
  2. Reduced neurotransmitter release
  3. Membrane hyperpolarization
  4. Increased chloride conductance

Explanation

Elevated extracellular potassium reduces the potassium concentration gradient, shifting the potassium equilibrium potential toward depolarization and increasing excitability. This can promote seizure spread.

Question 21Basic Science Aspects of Epilepsy

Which genetic mechanism best explains the inheritance pattern of most idiopathic generalized epilepsies?

  1. Mitochondrial maternal inheritance
  2. Autosomal dominant single-gene mutation
  3. Complex polygenic inheritance Correct answer.
  4. X-linked recessive inheritance

Explanation

Most common generalized epilepsies show complex, polygenic inheritance with multiple susceptibility genes and environmental contributions. Only rare syndromes follow simple Mendelian patterns.

Question 22Basic Science Aspects of Epilepsy

Which cortical inhibitory interneuron subtype selectively targets the axon initial segment and thereby controls action potential generation?

  1. Bipolar cell
  2. Martinotti cell
  3. Chandelier cell Correct answer.
  4. Basket cell

Explanation

Chandelier (axo-axonic) cells synapse onto the axon initial segment, powerfully gating spike initiation. Basket cells instead target the soma and proximal dendrites.

Question 23Basic Science Aspects of Epilepsy

A drug reduces the low-threshold T-type calcium current in thalamic relay neurons. Which seizure type would this most specifically target?

  1. Absence seizures Correct answer.
  2. Mesial temporal lobe seizures
  3. Epilepsia partialis continua
  4. Simple partial motor seizures

Explanation

T-type calcium currents in thalamocortical relay neurons generate the rhythmic spike-and-wave oscillations of absence seizures, making them a selective target. Focal neocortical and temporal seizures depend on different mechanisms.

Question 24Basic Science Aspects of Epilepsy

Which phenomenon explains why a sodium channel blocker suppresses seizure discharges more than normal background firing?

  1. Tachyphylaxis
  2. Use dependence Correct answer.
  3. Tolerance
  4. First-pass metabolism

Explanation

Use dependence means block increases with frequent channel opening and inactivation, so rapidly firing seizure neurons are preferentially suppressed while normal low-frequency firing is spared. The other terms describe pharmacokinetic or receptor phenomena.

Question 25Basic Science Aspects of Epilepsy

Which best explains why cortical dysplasia is a common cause of medically refractory focal epilepsy?

  1. It eliminates GABAergic interneurons entirely
  2. It disrupts normal laminar architecture and creates abnormal excitatory circuits Correct answer.
  3. It reduces cortical blood flow globally
  4. It causes diffuse demyelination

Explanation

Focal cortical dysplasia produces disorganized lamination, dysmorphic neurons, and abnormal excitatory connectivity that generate intrinsic epileptogenicity. It is not a diffuse demyelinating or purely vascular process.

Question 26Basic Science Aspects of Epilepsy

During sustained high-frequency firing, a neuron's action potentials become progressively broader. Which membrane property most directly explains this change?

  1. Increasing chloride conductance through GABA-A receptors
  2. Depolarization-induced closure of leak potassium channels
  3. Cumulative inactivation of voltage-gated potassium channels
  4. Progressive inactivation of voltage-gated sodium channels Correct answer.

Explanation

Broadening of the action potential during repetitive firing reflects the fraction of sodium channels that have entered the inactivated state, reducing the available inward current relative to the repolarizing potassium current. This use-dependent behavior underlies the preferential effect of sodium channel blockers on rapidly firing neurons.

Question 27Basic Science Aspects of Epilepsy

Which brain structure is the principal generator of the widespread 3-Hz spike-and-wave discharges of childhood absence epilepsy?

  1. Cerebellar Purkinje cells
  2. Hippocampal CA3 pyramidal cells
  3. Substantia nigra pars reticulata
  4. Corticothalamocortical circuits Correct answer.

Explanation

Absence seizures arise from abnormal oscillations within reciprocating thalamocortical and corticoreticular networks, with cortical and thalamic elements jointly producing the spike-and-wave complex. The cortex generates the spike, while thalamic burst firing contributes to the slow wave.

Question 28Basic Science Aspects of Epilepsy

A mutation in a neuronal nicotinic acetylcholine receptor gene produces a receptor that desensitizes abnormally slowly. In an autosomal dominant epilepsy syndrome, this most likely produces seizures through which mechanism?

  1. Reduced presynaptic glutamate release
  2. Impaired myelin formation in white matter
  3. Loss of chloride-mediated inhibition
  4. Prolonged excitatory cation influx at synapses Correct answer.

Explanation

Nicotinic acetylcholine receptors are ligand-gated cation channels, so slowed desensitization prolongs excitatory inward current and increases network excitability. This gain-of-function mechanism fits the autosomal dominant inheritance of several nicotinic receptor-related epilepsy syndromes.

Question 29Basic Science Aspects of Epilepsy

Which neurotransmitter system provides the major ascending projection that desynchronizes the cortical EEG and promotes wakefulness?

  1. Glutamatergic projections from the cerebellar nuclei
  2. GABAergic projections from the reticular thalamic nucleus
  3. Cholinergic projections from the basal forebrain and brainstem Correct answer.
  4. Dopaminergic projections from the arcuate nucleus

Explanation

Cholinergic neurons of the basal forebrain and pedunculopontine/laterodorsal tegmental nuclei promote cortical activation and low-voltage fast EEG activity. Loss of this ascending activation contributes to the slow, synchronized activity of sleep and to seizure-related state changes.

Question 30Basic Science Aspects of Epilepsy

A patient's seizures consistently begin with an olfactory hallucination followed by lip smacking. Which anatomic region is most implicated as the seizure onset zone?

  1. Precentral gyrus
  2. Superior parietal lobule
  3. Occipital pole
  4. Medial temporal lobe Correct answer.

Explanation

Olfactory auras reflect involvement of mesial temporal structures such as the uncus and amygdala, and automatisms like lip smacking are typical of temporal lobe seizures. This constellation localizes onset to the medial temporal region.

Question 31Basic Science Aspects of Epilepsy

Which statement best describes the functional role of the blood-brain barrier in antiepileptic pharmacotherapy?

  1. It actively pumps lipophilic drugs into the brain
  2. It metabolizes most antiepileptic drugs before they reach neurons
  3. It restricts entry of many drugs by tight junctions and efflux transporters Correct answer.
  4. It is absent in the epileptogenic zone

Explanation

The blood-brain barrier limits paracellular diffusion via tight junctions and expresses efflux transporters such as P-glycoprotein that extrude many compounds. These features constrain brain penetration of antiepileptic drugs and contribute to pharmacoresistance.

Question 32Basic Science Aspects of Epilepsy

Which mechanism best explains why a partial (focal) seizure may secondarily generalize?

  1. Selective failure of cortical inhibition in the contralateral hemisphere
  2. Spread of ictal activity through corticothalamic and commissural pathways Correct answer.
  3. Diffusion of excitatory amino acids through cerebrospinal fluid
  4. Simultaneous onset in both hemispheres from a single generator

Explanation

Focal seizures begin in a localized network and spread via corticocortical, commissural, and thalamocortical pathways to recruit both hemispheres, producing secondary generalization. The sequence of spread determines the clinical evolution from focal to bilateral tonic-clonic features.

Question 33Basic Science Aspects of Epilepsy

Which EEG frequency band corresponds to the normal posterior dominant rhythm of relaxed wakefulness in an adult?

  1. Delta (0.5-4 Hz)
  2. Theta (4-8 Hz)
  3. Alpha (8-13 Hz) Correct answer.
  4. Beta (13-30 Hz)

Explanation

The posterior dominant rhythm of relaxed, eyes-closed wakefulness in adults lies in the alpha range, approximately 8 to 13 Hz, and attenuates with eye opening. Recognizing this normal rhythm is essential for distinguishing it from epileptiform activity.

Question 34Basic Science Aspects of Epilepsy

A hippocampal slice is bathed in a solution with reduced extracellular magnesium. Which change in synaptic physiology is most expected?

  1. Loss of action potential generation in pyramidal cells
  2. Increased GABA-A receptor chloride conductance
  3. Enhanced NMDA receptor-mediated currents at resting membrane potential Correct answer.
  4. Blockade of AMPA receptor-mediated fast transmission

Explanation

Extracellular magnesium normally produces a voltage-dependent block of NMDA receptors, so lowering magnesium relieves this block and enhances NMDA-mediated calcium influx at resting potentials. This manipulation is a classic method for inducing epileptiform bursting in vitro.

Question 35Basic Science Aspects of Epilepsy

Which developmental process most directly explains why the immature brain is more susceptible than the adult brain to age-specific seizure syndromes?

  1. Transient imbalance of excitatory over inhibitory synaptic maturation Correct answer.
  2. Permanent loss of GABA-A receptor expression at birth
  3. Premature maturation of the blood-brain barrier
  4. Early completion of myelination in the cortex

Explanation

During development, excitatory synapse formation and GABAergic maturation proceed asynchronously, producing a transient period in which excitation predominates. This shifting balance underlies age-dependent seizure susceptibility and syndromes such as infantile spasms.

Question 36Basic Science Aspects of Epilepsy

Which ion channelopathy is most strongly associated with benign familial neonatal seizures?

  1. Voltage-gated potassium channel subunits KCNQ2/KCNQ3 Correct answer.
  2. Ligand-gated GABA-A receptor gamma subunit
  3. Voltage-gated calcium channel subunit CACNA1A
  4. Voltage-gated sodium channel subunit SCN1A

Explanation

Benign familial neonatal seizures are most often caused by mutations in KCNQ2 or KCNQ3, which encode potassium channel subunits underlying the M-current that restrains repetitive firing. Loss of this current increases neuronal excitability in the neonatal period.

Question 37Basic Science Aspects of Epilepsy

A neuron's inhibitory postsynaptic currents become smaller after prolonged exposure to a benzodiazepine. Which process best accounts for this loss of effect?

  1. Enhanced glutamate release from presynaptic terminals
  2. Downregulation of postsynaptic GABA-A receptors Correct answer.
  3. Upregulation of GABA-A receptor gamma subunits
  4. Increased expression of voltage-gated sodium channels

Explanation

Sustained benzodiazepine exposure produces tolerance through downregulation and altered trafficking of postsynaptic GABA-A receptors, reducing inhibitory current amplitude. This pharmacodynamic adaptation is a recognized cause of tolerance to benzodiazepine effects.

Question 38Basic Science Aspects of Epilepsy

Which feature best distinguishes epileptiform discharges from normal sharp transients on EEG?

  1. Occurrence only during photic stimulation
  2. A sharp wave followed by a slow wave with a voltage field Correct answer.
  3. A frequency of exactly 10 Hz
  4. Presence of a field that is maximal at the vertex

Explanation

Epileptiform discharges typically consist of a sharp transient followed by a slow wave and show a physiologic voltage field that can be mapped across electrodes. Spiky morphology alone is insufficient; the field and context distinguish them from normal variants.

Question 39Basic Science Aspects of Epilepsy

A drug selectively blocks the persistent sodium current (I-NaP) that flows near threshold. Which effect on neuronal firing is most expected?

  1. Increased repetitive firing in response to sustained depolarization
  2. Reduced tendency to fire sustained bursts during prolonged depolarization Correct answer.
  3. Complete failure of single action potential generation
  4. Lowered action potential threshold with faster repetitive firing

Explanation

The persistent sodium current depolarizes the membrane near threshold and supports sustained repetitive firing and bursting. Blocking it reduces burst generation while leaving the transient sodium current that produces individual spikes largely intact.

Question 40Basic Science Aspects of Epilepsy

Which best explains why cortical dysplasia is a frequent cause of medically refractory focal epilepsy?

  1. Dysplastic lesions are always located in the occipital lobe
  2. Dysplastic neurons lack sodium channels entirely
  3. Dysplastic tissue lacks blood supply and cannot be imaged
  4. Dysplastic tissue forms intrinsic epileptogenic networks with altered excitability Correct answer.

Explanation

Dysplastic cortex contains abnormal cell types, disrupted lamination, and altered receptor and transporter expression that create intrinsically epileptogenic networks. These networks often respond poorly to medication and may require surgical resection.

Question 41Clinical Evaluation and Diagnosis

A 24-year-old has recurrent unprovoked seizures with impaired awareness and oral automatisms, often preceded by a rising epigastric sensation. Which seizure onset pattern does this most suggest?

  1. Generalized onset absence
  2. Focal onset with impaired awareness Correct answer.
  3. Focal onset with retained awareness
  4. Generalized onset tonic-clonic

Explanation

A rising epigastric aura followed by automatisms and impaired awareness is a classic focal (temporal lobe) dyscognitive seizure. Generalized absence seizures have abrupt brief staring without auras or automatisms.

Question 42Clinical Evaluation and Diagnosis

Which EEG finding is the hallmark interictal pattern of absence epilepsy?

  1. Frontal polyspike bursts during sleep only
  2. 3-Hz generalized spike-and-wave discharges Correct answer.
  3. Temporal intermittent rhythmic delta activity
  4. Periodic lateralized epileptiform discharges

Explanation

Absence epilepsy is characterized by 3-Hz generalized spike-and-wave discharges that are typically activated by hyperventilation. The other patterns reflect focal or structural pathology.

Question 43Clinical Evaluation and Diagnosis

A patient reports episodes of sudden loss of postural tone with brief head drops while standing, without loss of awareness. This semiology is best described as which type of seizure?

  1. Clonic seizure
  2. Myoclonic seizure
  3. Tonic seizure
  4. Atonic seizure Correct answer.

Explanation

Sudden loss of muscle tone causing a drop attack without impaired awareness describes an atonic seizure. Myoclonic seizures are brief shock-like jerks, tonic seizures cause stiffening, and clonic seizures cause rhythmic jerking.

Question 44Clinical Evaluation and Diagnosis

Which of the following is the most common cause of acute symptomatic seizures in adults presenting to the emergency department?

  1. Multiple sclerosis
  2. Metabolic derangements such as hypoglycemia Correct answer.
  3. Meningioma
  4. Primary brain tumor

Explanation

Metabolic disturbances, especially hypoglycemia, hyponatremia, and alcohol withdrawal, are the most common causes of acute symptomatic seizures in adults. Structural lesions like tumors and demyelination are less frequent causes.

Question 45Clinical Evaluation and Diagnosis

Which clinical feature best distinguishes psychogenic nonepileptic seizures from epileptic seizures?

  1. Postictal confusion
  2. Tongue biting
  3. Pelvic thrusting and asynchronous limb movements Correct answer.
  4. Incontinence

Explanation

Asynchronous, non-stereotyped movements with pelvic thrusting and side-to-side head turning suggest psychogenic nonepileptic seizures. Tongue biting, incontinence, and postictal confusion are more typical of epileptic seizures.

Question 46Clinical Evaluation and Diagnosis

In evaluating a first unprovoked seizure in an adult, which test is most essential to exclude a structural cause?

  1. Lumbar puncture
  2. Brain MRI with epilepsy protocol Correct answer.
  3. Carotid ultrasound
  4. Serum ammonia

Explanation

A brain MRI with an epilepsy protocol is the imaging study of choice to detect structural lesions such as cortical dysplasia, tumors, or mesial temporal sclerosis. Lumbar puncture is reserved for suspected infection, and the other tests do not assess brain structure.

Question 47Clinical Evaluation and Diagnosis

Which of the following is a recognized risk factor for developing epilepsy after traumatic brain injury?

  1. Penetrating head injury with prolonged loss of consciousness Correct answer.
  2. Minor scalp laceration
  3. Brief concussion without loss of consciousness
  4. Isolated facial fracture

Explanation

Penetrating injury, prolonged loss of consciousness, and intracranial hemorrhage increase the risk of post-traumatic epilepsy. Minor head trauma without brain injury carries little to no increased risk.

Question 48Clinical Evaluation and Diagnosis

Which of the following best describes the purpose of video-EEG monitoring in epilepsy evaluation?

  1. To capture and correlate clinical events with EEG activity Correct answer.
  2. To assess cerebral perfusion
  3. To determine medication blood levels
  4. To measure intracranial pressure

Explanation

Video-EEG monitoring correlates the patient's clinical events with simultaneous EEG to confirm seizure type and distinguish epileptic from nonepileptic events. It does not measure pressure, perfusion, or drug levels.

Question 49Clinical Evaluation and Diagnosis

A 35-year-old woman has stereotyped episodes of déjà vu followed by staring and lip smacking lasting about one minute. Which lobe is most likely involved?

  1. Temporal lobe Correct answer.
  2. Parietal lobe
  3. Occipital lobe
  4. Cerebellum

Explanation

Déjà vu, staring, and oral automatisms are characteristic of temporal lobe seizures. Occipital seizures typically present with visual phenomena, and cerebellar involvement does not produce this semiology.

Question 50Clinical Evaluation and Diagnosis

A patient with juvenile myoclonic epilepsy is being counseled. Which seizure type is most characteristic of this syndrome?

  1. Prolonged febrile seizures
  2. Drop attacks without myoclonus
  3. Morning myoclonic jerks Correct answer.
  4. Nocturnal focal motor seizures

Explanation

Juvenile myoclonic epilepsy is characterized by morning myoclonic jerks, often with generalized tonic-clonic seizures and sometimes absence. Focal nocturnal seizures and febrile seizures belong to other syndromes.