EEG Board Prep-technical Sciences
MULTIPLE CHOICE QUESTIONS TO HELP NEUROTECHNOLOGISTS PREPARE FOR THEIR BOARD EXAM
- 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
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