ABRET Practice Exam Questions And Answers
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Upward - Answer✔The EEG amplifier is designed so that when input 1 is more negative than
input 2, the deflection will be
The characteristic of an amplifier that rejects external interference - Answer✔Common Mode
Rejection is
0.1 Hz - Answer✔Most attenuated by a low frequency filter of 1 Hz
For the deflection to fall (decay) to 67% of the peak deflection - Answer✔Time constant is
defined as the time required
Spike 10mm, wave 6mm - Answer✔An EEG record has three per second spike/wave discharges.
Both the spike and the slow wave have voltages of 100uV. If this discharge is recorded with a
LFF of 5Hz and sensitivity of 10uV/mm, what would the deflection of the spike and wave be
40% - Answer✔HFF setting 35hz would attenuate 50 Hz muscle activity by approximately what
percentage
Between 25 and 35mm/second horizontal scaling and min of 100 data points/second to
accurately display EEG on monitor screen - Answer✔According to ACNS guidelines, recording
clinical EEG on Digital Media requires monitors to have
10Hz - Answer✔In a record with 10Hz alpha activity, when the display epoch is changed form
10 seconds per display screen to 20 seconds per display screen, the frequency of the activity
will be
The American Clinical Neruophysiology Society (ACNS) - Answer✔Guidelines for recording
digital EEG are written by
Temporary memory storage that is critical to rapid computer operations - Answer✔The term
RAM means
T1 or F9 - Answer✔The electrode site that is located 1 cm above, one third the distance out
from the L external auditory meatus towards the left outer canthus
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