ABRET (3) UPDATED ACTUAL Exam
Questions and CORRECT Answers
What type of montage is shown in this sample? - CORRECT ANSWER - Referential
Montage
Which montage would best display the amplitude of a left temporal spike? - CORRECT
ANSWER - Left temporal to the contralateral ear
Referential recording is most appropriate for measuring? - CORRECT ANSWER - Voltage
How can a defective electrode be identified? - CORRECT 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...? - CORRECT
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? - CORRECT
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? - CORRECT 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? - CORRECT ANSWER - S= 5 microvolts/mm, LFF=5 Hz, HFF
= 70 Hz
, In a referential montage localization is determined by? - CORRECT ANSWER -
Amplitude
Switching an effective electrode located in a bad pin position and a good electrode located in
working pin position will result in..? - CORRECT ANSWER - Bad electrode-high
impedance in a good pin position; good electrode- high impedance in bad pin position
A defective headbox pin can be identified by...? - CORRECT 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 - CORRECT ANSWER - Does
not change spike amplitude or duration - it shrinks the picture of the displayed waves
Which of the following setting is most sensitive - CORRECT ANSWER - 2 µV/mm
A waveform of 0.5 Hz can be best enhanced with a filter of - CORRECT ANSWER - LFF
of 0.3 Hz
Which of the following time constants would best display delta activity? - CORRECT
ANSWER - 1.0 second
Time constant - CORRECT ANSWER - Low frequency filter
A 0.5 Hz wave is enhanced without affecting a spike by using...? - CORRECT ANSWER -
a LFF 0.3 Hz
Frequency Response Curve - CORRECT ANSWER - Filters
The 60 Hz notch filter will have the greatest effect on a waveform having a duration of -
CORRECT ANSWER - 16mm/sec
Questions and CORRECT Answers
What type of montage is shown in this sample? - CORRECT ANSWER - Referential
Montage
Which montage would best display the amplitude of a left temporal spike? - CORRECT
ANSWER - Left temporal to the contralateral ear
Referential recording is most appropriate for measuring? - CORRECT ANSWER - Voltage
How can a defective electrode be identified? - CORRECT 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...? - CORRECT
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? - CORRECT
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? - CORRECT 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? - CORRECT ANSWER - S= 5 microvolts/mm, LFF=5 Hz, HFF
= 70 Hz
, In a referential montage localization is determined by? - CORRECT ANSWER -
Amplitude
Switching an effective electrode located in a bad pin position and a good electrode located in
working pin position will result in..? - CORRECT ANSWER - Bad electrode-high
impedance in a good pin position; good electrode- high impedance in bad pin position
A defective headbox pin can be identified by...? - CORRECT 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 - CORRECT ANSWER - Does
not change spike amplitude or duration - it shrinks the picture of the displayed waves
Which of the following setting is most sensitive - CORRECT ANSWER - 2 µV/mm
A waveform of 0.5 Hz can be best enhanced with a filter of - CORRECT ANSWER - LFF
of 0.3 Hz
Which of the following time constants would best display delta activity? - CORRECT
ANSWER - 1.0 second
Time constant - CORRECT ANSWER - Low frequency filter
A 0.5 Hz wave is enhanced without affecting a spike by using...? - CORRECT ANSWER -
a LFF 0.3 Hz
Frequency Response Curve - CORRECT ANSWER - Filters
The 60 Hz notch filter will have the greatest effect on a waveform having a duration of -
CORRECT ANSWER - 16mm/sec
