EEG Board Prep-technical Sciences

50 Questions | Total Attempts: 2553

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EEG Board Prep-technical Sciences

MULTIPLE CHOICE QUESTIONS TO HELP NEUROTECHNOLOGISTS PREPARE FOR THEIR BOARD EXAM


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Questions and Answers
  • 1. 
    The smallest particle into which a substance can be divided and still retain its characteristics is the
    • A. 

      Atom

    • B. 

      Molecule

    • C. 

      Compound

    • D. 

      Ion

  • 2. 
    Coulomb's Law deals with
    • A. 

      Charge

    • B. 

      Volume conduction

    • C. 

      Frequency

    • D. 

      Phase

  • 3. 
    The movement of electrons through a conducter is
    • A. 

      Resistance

    • B. 

      Voltage

    • C. 

      Current

    • D. 

      Capacative reactance

  • 4. 
    The ability to store charge is
    • A. 

      Inductance

    • B. 

      Impedance

    • C. 

      Condensor

    • D. 

      Capacitance

  • 5. 
    Which of the following is NOT related to Ohm's Law?
    • A. 

      Electromotive force

    • B. 

      Impedance

    • C. 

      Voltage

    • D. 

      Phase

  • 6. 
    Input impedance should
    • A. 

      Be very high

    • B. 

      Be very low

    • C. 

      Equal the common mode rejection ratio

    • D. 

      Affect the low frequency activity

  • 7. 
    Gain is
    • A. 

      The ratio of output signal to input signal

    • B. 

      The same as sensitivity

    • C. 

      Always less then 100:1

    • D. 

      Express in dB

  • 8. 
    In the mV/cm position, the sensivity of the amplifier is what fraction of the sensitivity on the uV/mm scale?
    • A. 

      1/10

    • B. 

      1/1000

    • C. 

      1/100

    • D. 

      1/1,000,000

  • 9. 
    The incoming signal of 50uV would give a deflection of 7.1mm at the standard EEG setting of 7uV/mm.  If the range were set to 7mV/cm, what voltage would be needed to produce the same pen deflection of 7.1mm?
    • A. 

      5mV

    • B. 

      50uV

    • C. 

      50mV

    • D. 

      .5mV

  • 10. 
    Given a pen deflection of 8mm and an input voltage of 25uV, what would the sensitivity of that channel be?
    • A. 

      200 uV/mm

    • B. 

      3.1 uV/mm

    • C. 

      17 mm

    • D. 

      33 uV/mm

  • 11. 
    In a differential EEG amplifier, the common mode rejection ratio of the in phase signals        (i.e. 60 hz) is at least
    • A. 

      100:1

    • B. 

      500:1

    • C. 

      50:1

    • D. 

      1000:1

  • 12. 
    The degree of overshoot, or "tail" allowed on a properly damped pen is what percentage of the total amount of deflection?
    • A. 

      None is allowed

    • B. 

      10%

    • C. 

      5%

    • D. 

      2%

  • 13. 
    The characteristic of a differential amplifier used to cancel common mode voltage is called
    • A. 

      Input impedance

    • B. 

      Common mode rejection

    • C. 

      Gain

    • D. 

      Differential input

  • 14. 
    The amount by which the differential amplifier increases the magnitude of the input signal is its
    • A. 

      Sensitivity

    • B. 

      Input impedance

    • C. 

      Gain

    • D. 

      Filter

  • 15. 
    In a differential amplifier, if input one(1) received a voltage of 65uV and input two(2) received a voltage of -30uV, the output voltage seen would be
    • A. 

      35 uV

    • B. 

      95 uV

    • C. 

      -95uV

    • D. 

      -35 uV

  • 16. 
    Excessive pen pressure has the same effect on the frequency characteristics similar to a pen that is
    • A. 

      Overdamped

    • B. 

      Underdamped

  • 17. 
    At a paper speed of 30mm/second, 5 division of EEG paper equal one second in time.  At a paper speed of 15mm/second, one division would equal
    • A. 

      40 milliseconds

    • B. 

      200 milliseconds

    • C. 

      400 milliseconds

    • D. 

      500 milliseconds

  • 18. 
    Which of the following EEG patterns would be enhanced by a paper speed of 15 mm/second?
    • A. 

      14 and 6/second positive spikes

    • B. 

      FIRDA

    • C. 

      Mirror focus

    • D. 

      Photic driving

  • 19. 
    Which of the following is attenuated by a time constant of .03 seconds?
    • A. 

      10 Hz

    • B. 

      15 Hz

    • C. 

      25 Hz

    • D. 

      3 Hz

  • 20. 
    Which of the following is MOST attenuated by a high frequency filter of 35 Hz?
    • A. 

      10 Hz

    • B. 

      15 Hz

    • C. 

      25 Hz

    • D. 

      35 Hz

  • 21. 
    Which of the following is attenuated by a high pass filter of 5 Hz?
    • A. 

      1 Hz

    • B. 

      10 Hz

    • C. 

      15 Hz

    • D. 

      20 Hz

  • 22. 
    Nasopharyngeal electrodes are used to record from the medial surface of the temporal lobe where as sphenoidal electrodes record from the
    • A. 

      Olfactory nerve

    • B. 

      Anterior tip of the temporal lobe

    • C. 

      Zygomatic arch

    • D. 

      Posterior portion of the frontal lobe

  • 23. 
    Needle electrodes are composed of
    • A. 

      Platinum

    • B. 

      Ag-AgCl

    • C. 

      Gold

    • D. 

      Tin

  • 24. 
    The best electrode for recording DC potentials is composed of
    • A. 

      Platinum

    • B. 

      Ag-AgCl

    • C. 

      Gold

    • D. 

      Tin

  • 25. 
    Referential recording is better than bipolar recording for measuring
    • A. 

      Phase reversals

    • B. 

      Voltage

    • C. 

      Phase

    • D. 

      Frequency