Failed test questions 3 up to ? 190
Tim constant is expressed in
Seconds
Benzapdiazepines such as ativan (Lorazepam) at therapudic levels can cause
frontal central beta
International classification of Epilepsies & Epileptic sndromes places juvenile myoclonic epilepsy under what category
generalized epilepsies and syndromes
Which of the following is a characteristic of REM sleep
low voltage mixed freq EEG activity reduced EMG activity saw tooth waves
Acns guidelines state that vertical scaling on digital EEG instruments shoud be a minimum of ______ per channel when displaying up to ____channels
10mm 21
Beta delta complesed are seen after what week in infants
39wks
Asymmetry of the occipital alpha rhythm voltage from the two hemispheres should be NO greater than what percentage apart
50%
what sensitivity should be used to resolve the morphology of a 500uV spike discharge
50uVmm
An EEG instrument's common mode rejection ratio should be? High or Low
High
EEG activity is most often appears in association with rapidly growing tumors such as glioblastoma multiforme and cerebral metastatic lesions
Polymorphic delta activity
confused state , left arm and left facial twitching will show what EEG pattern
Right temporal central epileptiform activity
K complexes are seen in what stage of sleep
Stage II III
Symmetry of sleep spindles when present is important in the evaluation of...
The physiological maturation of an infant
Normal EEG pattern for a full term infant
Trace Alternant isolated frontal sharp waves bursts suppression
Creutzfeldt jacob disease EEG patern
What pattern is seen? Question 110
What autosomal disorder of copper metabolism also called hepatolenticula degeneration and what are the symptoms
Wilson's disease ( wilson needs copper) Symptoms: behavioral changes, ataxia, dysarthia and abnormal mvmts as well as hepatic dysfunction
family history of epilepsy is especially important to determine the diagnosis of...
classic absence seizures
Nasopharyngeal or T1/T2 aka F9/f10 electrodes ore mont helpful in recording discharges associated with what type of sz classification
complex partial sz
A short time constant results in
decreased in slow activity
How would a 15 hz HFF affect 15hz sleep spindles?
decreases amplitude by 30%
sampling skew is a problem with early digital EEG instruments caused by
inability to simultaneously sample multiple channels of EEG
increasing depth of anestesia caused which sequences of EEG changes
increased beta then intermixed theta then delta with bursts supression if anesthesia is deep enough
Antidepressants cause what EEG abnormality
increased theta and beta activity at therapeutic doses
How will changing the timbase/epoch/equivalent paper speed from 10 sec to 20 sec alter a 12hz alpha rhythm
it will be compressed (bunched up)
Some characteristics of REM are
low voltage mixed freq activity reduced EMG activity saw tooth waves
A longer time constant results in
mor slow frequencies recorded
Rhythmic focal activity is common for what age
neonates
Impedance is the
opposition to the flow of alternating current
When seen in the waking EEG of adolescents, posterior slow waves of youth attenuate when
pt opens eyes
A common seizure pattern in neonates is
rhythmic focal activity
Phenytoin (Dilantin) will have little effect on the EEG at therapeutic levels however when approchin toxic levels the drug can cause what on EEG
slowing in the background alpha
Resistance describes
the forces opposing direct current flow
A recommended method of monitoring infusion motor artifact from IV infusion pumps is to place two electrodes on ...
the infusion pump apparatus
normal patterns for a full term infant are
trace alternant isolated frontal sharp waves beta-delta complexes in quiet sleep
Electromotive force is measured in
volts
