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ABRET EEG-Practice Exam Questions
With SOLVED AND VERIFIED 100%
CORRECT Answers 100% A+ SCORE.
Rolandic Spikes
what type of spikes are seen most often in children
5 - 6 Hz
by year one what should the dominant background rhythm be
5 Hz
what should the PDR of a awake 5 month old infant be
ORIDA
what encephalopathic EEG pattern is most commonly associated with children
Benign Rolandic Epilepsy
onset of between 3 and 13 years
begins with sensorimotor manifestations on one side of the face and mouth
Unilateral oral paresthesias as well as facial clonic and/or tonic activity are common
Speech arrest
hypersalivation
most common focal epilepsy of childhood
the most common focal epilepsy in adults is temporal lobe epilepsy.
Posterior Slow Waves of Youth (PSWY)
High voltage theta or delta waves, commonly seen in children 8-14 years of age, accentuated by hyperventilation
3 - 6 months
a reactive PDR to eye closure first appears around how many months of age
Electral decrementals
what is a sign of infantile spasms in a EEG
delta brush
A pattern of 1-1.5 Hz activity with superimposed 8-12 hz activity that is seen in neonates is called what
Trace Alternant
if you want to enhance slow wave activity on a time constant what number would you use.
Alzheimer's disease
which of the following diseases typically produces diffused slowing in a EEG.
- Meningioma
- Cerebral abscess
- Alzheimer's
- cerebral thrombosis
REM in the onset Sleep
which of the following is a characteristic feature in a EEG of a narcolepsy patient
1.FIRDA
2.REM in the onset of sleep
3.Increase in EMG
- Diffused delta slowing
Teberculosis
most common infection worldwide
acquired in the hospital- HBV, HBC, HIV
what is a nosocomial infection, and what are the top three infections
Crutzfeld - Jacob Disease
spongiform encephalopathy that is a prion based disease, and is passed by contact with tissue from certain organs.
FIRDA
frontal delta metabolic encephalopathy
frequency decreases
how do triphasic waves change with the deepening level of a coma
coma patients, hepatic uremia, kidney or liver issues
continuous 2/sec GPDS with triphasic morphology is seen in what type of patients.
24 hours
how long after dialysis should you wait to complete a diagnostic EEG
a partial seizure, starting from a focus and remaining localized, that does not produce loss of consciousness
Jacksonian March Seizure
a phenomenon where a Simple partial seizure spreads from the distal part of the limb toward the ipsilateral face (on the same side of the body). They involve a progression of the location of the seizure in the brain, which leads to a "march" of the motor presentation of symptoms.
Versive seizure
body terns away from the side of the seizure discharge
complex partial seizure
attacks of confusion,& loss of awareness with semi purposeful movements, often refusion, lip smacking, clapping, hitting, kicking.
Lennox-Gastaut syndrome
multi seizure type, Manifests between ages 2-8 yrs, triad of:
- Mental retardation
- Diffuse slow spike and wave pattern on EEG
- Multiple types of generalized seizures
- Pts. commonly have status epilepticus
Lennox-Gastaut Syndrome (LGS)
abnormal absence is associated with shat syndrome
focal sz, tonic clonic
what two sz types are associated with benign Rolandic epilepsy
How many bits are in a byte?
8
5uv/mm
most sensitive sensitivity setting is
60 hz, and radio
primary artifacts that are reduced by the common mode rejection ratio are
voltage
referential recording is most appropriate for measuring what
contralateral ear reference
140 p/sec
what is the sampling rate that should be used for a HHF setting of 70 hz
niquest theory
in order to find the sampling points per second you need to double the HZ
anterior temporal lobes
sphenoidal electrodes are used to record activity from what area of the brain
source reference derivation
what is the laplacian montage
Rolloff
the sharpness of the frequency response curve is determined by the filter
increase 60 hz activity
what occurs with unbalanced electrode impedances of greater than 20 khoms
maximize common mode rejection
balanced impedances allows for
posterior fossa tumor
papilledema is most commonly associated with
subarachnoid hemorrhage
Bleeding into the subarachnoid space, where the cerebrospinal fluid circulates.
Subderal hematoma
focal or unilateral suppression and slowing can be a sign of what
semianually
according to OSHA when must electrodionostic equipment be checked for leakage
Aquaduct of Sylvius
connects third and fourth ventricle
acoustic neuromas are from cranial nerve
III
ocular movements are controlled primarily by cranial nerve
infancy
the onset of sterge weber disease is commonly diagnosed at
glioblastoma
tumor most likely to provoke EEG abnormalities
battens disease
occipital spikes in response to low frequency flashes, are seen in what condition
frontal lobe seizures
seizures involved in cycling movement, kicking, throwing, often nocturnal
neck stiffness
nuchal rigidity
nothing
what will the EEG of a patient with early stage Alzheimer's show
Lennox-Gastaut
slow spike and wave complexes are a characteristic of
minimum horizontal resolution of ___ is required
a LLF of 5 hz will attenuate a 5 hz wave by how much
200 samples/second ( double for Nyquist, triple for ACNS)
the waveforms contained frequencies as high as 100 Hz, what is the Nyquist sampling rate.
alliasing
what happens when a 60 cycle sign wave is sampled at 100 Hz
for a pattern to qualify as rhythmic or periodic how many cycles does it have to go through
according to ACNS guidelines how many bits of resolution is required
1.0 sec
what time constant would best display delta activity
Bancaud Phenomenon
Uncommon unilateral failure of the alpha to attenuate with eye opening. It may occur in lesions of the temporal or parietal lobes.
percentage of adults that have asymmetric delta activity
Sylvain Fissure
divides the temporal lobe from the frontal and parietal (longer on the left hemisphere)
frontal lobe
the precentral gyrus is what part of the brain
MU
normal activity that can be seen at the C3 or C4 electrodes
widespread low voltage activity
a EEG of a tense and anxious patient will show
Wickets
A normal variant seen in both awake and in light sleep, with a frequency of 6-11Hz. They usually occur in short runs, but may also appear as single sharp transients. Located in the temporals, and usually seen bilaterally, but may be independent to one hemisphere
West syndrome
infantile spams with developmental delay and hypsartyhmia EEG pattern are all signs of
C3 spike
a EEG of a child with benign Rolandic epilepsy is most likely going to show
9 - 13 hz
