Update Graded A+
The ability of the EEG to output the voltage difference between two inputs to a single channel is
known as
A. Deflection
B. Differential Amplification
C. Cancellation
D. Phase Reversal B. Differential Amplification
The periodic pattern seen with Herpes Simplex Encephalitis most often occurs in the
A. frontla lobes
B. cerebellum
C. temporal lobes
D. brainstem C. temporal lobes
Aphasia is
A. a language disorder
B. facial paralysis
C. a hearing impairment
D. a learning disability A. a language disorder
1 to 1.5 Hz generalized spike and wave is the characteristic pattern of
A. PLEDs
B. Lennox Gasteau
C. Huntington Chorea
,D. Alzheimers Disease B. Lennox Gasteau
Stage 1 and stage 2 sleep frequently increase the incidence of spikes in a patient with
A. Alzheimers Disease
B. sickle cell anemia
C. benign focal epilepsy
D. Huntington Chorea C. benign focal epilepsy
This pattern is seen in quiet sleep and is described as periods of relative "quiescence"
alternating with periods of high voltage delta bursts Trace Alternant
Which normal pattern is seen in children associated with sleep onset?
A. HV Buildup
B. Hypnogic Hypersynchrony
C. Trace Alternant
D. Quiet Sleep B. Hypnogic Hypersynchrony
Characterized by slow rolling eye movements attenuation of alpha and increased theta in the
posterior head regions
A. Normal awake eeg
B. Stage 1 sleep
C. Stage 2 sleep
D. Abnormal generalized theta B. Stage 1 sleep
Balanced impedances allow you to
A. Eliminate artifact rejection
, B. Optimize horizontal resolution
C. Minimize common mode rejection
D. Maximize common mode rejection D. Maximize common mode rejection
A single attenuated channel of EEG may be the result of
A. Inter electrode spacing
B. 60 cycle interference
C. Low input impedance
D. Inter electrode spacing is too close D. Inter electrode spacing is too close
EEG is most useful in
A. Acoustic Neuroma
B. Migraine
C. Encephalopathy
D. Cardiac Arrhythmia C. Encephalopathy
Which of the following measures the opposition to current flow when a known voltage is
applied?
A. A/D converter
B. Differential Amplifier
C. Fast Fourier
D. Impedance Meter D. Impedance Meter
Balanced electrode impedances are important to
A. Lessen 60 Hz interference
B. increase patient safety