# EEG Board Prep-technical Sciences

50 Questions | Total Attempts: 2553  Settings  MULTIPLE CHOICE QUESTIONS TO HELP NEUROTECHNOLOGISTS PREPARE FOR THEIR BOARD EXAM

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• 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