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ABRET Final Test Actual Questions and Answers 100% Correct
- What type of montage is shown in this sample?
Answer: Referential Montage
- Which montage would best display the amplitude of a left temporal spike?-
Answer: Left temporal to the contralateral ear
- Referential recording is most appropriate for measuring?
Answer: Voltage
- How can a defective electrode be identified?
Answer: Placing a bad electrode with high impedance into a pin position with
working non reference electrode will result high impedance
- To confirm the integrity of a poorly recording electrode, the tech should...?
Answer: - Replace the electrode with a low impedance in the connection of the poorly recording electrode and recheck impedance
- 14- and -6/sec Hz positive spikes are best demonstrated with a reference to?
Answer: Contralateral ear reference
- When using the average reference, if a spike-and-wave focus appears at C3, the
abnormality would be best enhanced by?
Answer: Excluding C3 and surrounding electrodes from reference
- A patient with suspected asymmetrical low-voltage fast activity is observed to
have a sweat artifact during the EEG recording. Which of the following EEG settings could be used to reduce the effects of the artifact?
Answer: S= 5 micro- volts/mm, LFF=5 Hz, HFF = 70 Hz
- In a referential montage localization is determined by?
Answer: Amplitude
- Switching an effective electrode located in a bad pin position and a good
electrode located in working pin position will result in..?Answer: Bad electrode-high impedance in a good pin position; good electrode- high impedance in bad pin position
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- A defective headbox pin can be identified by...?
Answer: Placing a non reference electrode with low impedance into a bad pin will result low impedance
- Increasing the number of seconds displayed on the monitor
Answer: Does not change spike amplitude or duration - it shrinks the picture of the displayed waves
- Which of the following setting is most sensitive
Answer: 2 µV/mm
- A waveform of 0.5 Hz can be best enhanced with a filter of
Answer: LFF of 0.3 Hz
- Which of the following time constants would best display delta activity?
Answer: - 1.0 second
- Time constant
Answer: Low frequency filter
- A 0.5 Hz wave is enhanced without affecting a spike by using...?
Answer: a LFF 0.3 Hz
- Frequency Response Curve
Answer: Filters
- The 60 Hz notch filter will have the greatest effect on a waveform having a
duration of
Answer: 16mm/sec
- A slow wave focus is best seen with...?
Answer: LFF 0.3 Hz, PPS of 15 mm/sec
- With high frequency filtering, muscle artifact may become distorted and look
like...?
Answer: Beta activity
- Which combination settings will help enhance a low voltage slow wave that is
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being masked by muscle activity?Answer: Sensitivity of 5µV; LFF of 0.3 Hz; HFF of 35 Hz
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