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EEG Study Guide for registry (ASET Review Questions) with Correct Answers
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EEG Study Guide for registry (ASET Review Questions) with Correct Answers The basic unit for measuring current flow is? - Ampere The basic unit of resistance? - Ohm Which of the following is not a valid expression of Ohm's law? A. R=EI or R=VI B. E=IR or V=IR C. I=E/R or I=V/R D. R=E/I or ...

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  • January 9, 2025
  • 39
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • eeg study guide for registry aset review question

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  • EEG
  • EEG

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EEG Study Guide for registry (ASET
Review Questions) with Correct
Answers

The basic unit for measuring current flow is? - ✔✔Ampere


The basic unit of resistance? - ✔✔Ohm


Which of the following is not a valid expression of Ohm's law?


A. R=EI or R=VI


B. E=IR or V=IR


C. I=E/R or I=V/R


D. R=E/I or R=V/I - ✔✔A. R=EI or R=VI


Which of the following is not a unit for measuring alternating frequencies?


A. Cycles per sec


B. Volts


C. Hertz


D. Kilocycles - ✔✔B. Volts


Which of the following describes the action of a capacitor?


A. opposes changes in current flow



Author. Emily Charlene, ©2025 All Rights Reserved.

,2|Page


B. converts alternating current to direct current


C. creates direct current resistance


D. stores energy - ✔✔D. stores energy


What is a filter? - ✔✔A circuit that allows some frequencies to pass through it, while others are blocked


What is an amplifier? - ✔✔A combination of electronic components designed to increase the power,

voltage or current of a signal.


A small fluctuating output recorded by the EEG instrument even when there is no input signal is called:


a. output voltage


b. linear distortion


c. 60Hz interference


d. noise - ✔✔D. noise


The EEG amplifier is designed so that when input 1 is more negative then input 2, the deflection will be? -

✔✔Upward


What is common mode rejection? - ✔✔the characteristic of an amplifier that rejects external interference


Which of the following is most attenuated by a low frequency filter of 1 Hz?


A. .5hz


B. 5hz


C. 10 hz


D. .1hz - ✔✔D. 0.1hz




Author. Emily Charlene, ©2025 All Rights Reserved.

,3|Page


Time constant is defined as the time required - - ✔✔for the deflection to fall (decay) to 37% of the peak

deflection.


A high frequency setting of 35hz would attenuate 50hz muscle activity by approximately what

percentage? - ✔✔40%


According to ACNS Guidelines, recording clinical EEG on digital media requires monitors to have? -

✔✔Between 25 and 35 mm/second horizontal scaling and a minimum of 100 data points/second to

accurately display EEG on the monitor screen.


The filter creating a very narrow band pass that should rarely be used clinically-


a. LF 5.0 and HF 70hz


b. LF 5.0 and HF 15hz


c. LF 0.1 and HF 70hz


d. LF 0.1 and HF 15hz - ✔✔B. LF 5.0 and HF 15hz


During the recording of cerebral activity, the calibration input voltage is changed from 50uv to 100uv.

What will be the result?


A. no effect on the activity being recorded


B. a two fold increase in amplitude


C. a one half reduction of amplitude


D. clipping of the waveform - ✔✔A. no effect on the activity being recorded


According the ACNS guidelines 2006, the minimum sampling rate for EEG Data, should be at

least____________times the highest high frequency filter setting. - ✔✔Three




Author. Emily Charlene, ©2025 All Rights Reserved.

, 4|Page


In a record with 10hz alpha activity. When the display epoch is changed from 10 seconds per display

screen to 20 seconds per display screen, the frequency of the activity will be________ - ✔✔10hz


Guidelines for recording digital EEG are written by: - ✔✔The american clinical neurophysiology society

(ACNS)


The term RAM means: - ✔✔TEMPORARY MEMORY STORAGE THAT IS CRITICAL TO RAPID

COMPUTER OPERATIONS


Three basic computer ports are: - ✔✔serial, parallel, usb


The best metals for clinical EEG recording are_________? - ✔✔Silver-silver chloride, platinum or gold


Which of the following is not related to measuring electrode resistance?


A. opposition to direct current flow


B. measurement while the electrode is unattached to the scalp


C. measurement with an ohmmeter


D. opposition to alternating current flow - ✔✔D. opposition to alternating current flow


The electrode site that is located 1cm above, one third the distance out from the left external auditory

meatus toward the left outer canthus is called? - ✔✔T1 or F9


Due to a central scalp lesion, C4 has to be relocated 4mm anteriorly. The technologist should:


a. relocate C3 4mm anteriorly


b. make no other placement changes


c. relocate P3 4mm anteriorly


d. relocate all electrodes in the right parasagittal plane 4mm anteriorly - ✔✔a. relocate C3 4mm anteriorly




Author. Emily Charlene, ©2025 All Rights Reserved.

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