EEG BOARD EXAM SCRIPT COMPLETE
QUESTIONS AND ANSWERS PREMIUM
STUDY SHEET
◉ The basic unit of resistance is:
a. Ohm
b. Coulomb
c. Ampere
d. Volt. Answer: a. 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). Answer: a. R=EI or (R=VI)
◉ Which of the following is NOT a unit for measuring alternating frequencies:
a. cycles per second
b. volts
c. hertz
d. kilocycles. Answer: b. volts
◉ Which of the following describes the action of a capacitor?
a. opposes changes in current flow
b. converts A/C to D/C
c. creates a direct current resistance
,d. stores energy. Answer: d. stores energy
◉ A circuit that allows some frequencies to pass through it, while others are blocked is a:
a. resistor
b. transistor
c. filter
d. reactor. Answer: c. filter
◉ A combination of electronic components designed to increase the power, voltage or current of a
signal:
a. amplifier
b. line filter
c. master gain control
d. sensitivity. Answer: a. amplifier
◉ 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. Answer: d. noise
◉ The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will
be. Answer: upward
◉ Common mode rejection is:
a. the ability of an amplifier to cancel out ECG artifact
b. the characteristic of an amplifier that rejects external interference
c. is dependent on the sampling rate
,d. controlle by the 60-cycle notch filter. Answer: b. 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. 0.5 Hz
b. 5.0 Hz
c. 10.0 Hz
d. 0.1 Hz. Answer: d. 0.1 Hz
◉ Time constant is defined as the time required for the deflection to fall (decay):
a. to 47% of the peak deflection
b. 57% of the peak deflection
c. 77% of the peak deflection
d. to 37% of the peak deflection. Answer: d. to 37% of the peak deflection
◉ An EEG record has 3/sec 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 a sensitivity of 10uV/mm, what would be the
deflection of the spike and the wave?
a. spike 10mm & wave 6mm
b. spike 6mm & wave 10mm
c. spike 10mm & wave 10mm
d. spike 6mm & wave 6mm. Answer: a. spike 10mm wave 6mm
◉ A high frequency setting of 35Hz would attenuate 50Hz muscle activity by approximately what
percentage:
a. 10%
b. 20%
c. 40%
d. 100%. Answer: c. 40%
, ◉ According to ACNS Guidelines, Recording on Clinical EEG on Digital Media requires monitors to have
between 25 & 35mm/second horizontal scaling and a:
a. maximum of 1,000 data points/second to accurately display EEG on the monitor screen
b. minimum of 100 data points/second to accurately display EEG on the monitor screen
c. maximum of 100 data points/second to accurately display EEG on the monitor screen
d. minimum of 1,000 data points/second to accurately display EEG on the monitor screen. Answer: b.
MINIMUM of 100 data points/second to accurately display EEG on the monitor screen
◉ The filters creating a very narrow band pass that should RARELY be used clinically are:
a. LFF 5.0Hz & HFF 70Hz
b. LFF 5.0Hz & HFF 15Hz
c. LFF 0.1Hz & HFF 70Hz
d. LFF 0.1Hz & HFF 15Hz. Answer: b. LFF 5.0Hz & HFF 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. Answer: a. no effect on the activity being recorded
◉ A spike is printed out on paper and measures 16mm peak to peak, the sensitivity of the instrument is
7uV/mm and a calibration signal of 50uV causes a deflection of 7.1mm...what is the voltage of the spike?
a. 1.2uV
b. 112uV
c. 12uV
d. 24uV. Answer: b. 112uV
◉ What input voltage is necessary to give a calibration deflection between 5 and 10mm if the sensitivity
is 30uV/mm?
QUESTIONS AND ANSWERS PREMIUM
STUDY SHEET
◉ The basic unit of resistance is:
a. Ohm
b. Coulomb
c. Ampere
d. Volt. Answer: a. 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). Answer: a. R=EI or (R=VI)
◉ Which of the following is NOT a unit for measuring alternating frequencies:
a. cycles per second
b. volts
c. hertz
d. kilocycles. Answer: b. volts
◉ Which of the following describes the action of a capacitor?
a. opposes changes in current flow
b. converts A/C to D/C
c. creates a direct current resistance
,d. stores energy. Answer: d. stores energy
◉ A circuit that allows some frequencies to pass through it, while others are blocked is a:
a. resistor
b. transistor
c. filter
d. reactor. Answer: c. filter
◉ A combination of electronic components designed to increase the power, voltage or current of a
signal:
a. amplifier
b. line filter
c. master gain control
d. sensitivity. Answer: a. amplifier
◉ 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. Answer: d. noise
◉ The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will
be. Answer: upward
◉ Common mode rejection is:
a. the ability of an amplifier to cancel out ECG artifact
b. the characteristic of an amplifier that rejects external interference
c. is dependent on the sampling rate
,d. controlle by the 60-cycle notch filter. Answer: b. 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. 0.5 Hz
b. 5.0 Hz
c. 10.0 Hz
d. 0.1 Hz. Answer: d. 0.1 Hz
◉ Time constant is defined as the time required for the deflection to fall (decay):
a. to 47% of the peak deflection
b. 57% of the peak deflection
c. 77% of the peak deflection
d. to 37% of the peak deflection. Answer: d. to 37% of the peak deflection
◉ An EEG record has 3/sec 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 a sensitivity of 10uV/mm, what would be the
deflection of the spike and the wave?
a. spike 10mm & wave 6mm
b. spike 6mm & wave 10mm
c. spike 10mm & wave 10mm
d. spike 6mm & wave 6mm. Answer: a. spike 10mm wave 6mm
◉ A high frequency setting of 35Hz would attenuate 50Hz muscle activity by approximately what
percentage:
a. 10%
b. 20%
c. 40%
d. 100%. Answer: c. 40%
, ◉ According to ACNS Guidelines, Recording on Clinical EEG on Digital Media requires monitors to have
between 25 & 35mm/second horizontal scaling and a:
a. maximum of 1,000 data points/second to accurately display EEG on the monitor screen
b. minimum of 100 data points/second to accurately display EEG on the monitor screen
c. maximum of 100 data points/second to accurately display EEG on the monitor screen
d. minimum of 1,000 data points/second to accurately display EEG on the monitor screen. Answer: b.
MINIMUM of 100 data points/second to accurately display EEG on the monitor screen
◉ The filters creating a very narrow band pass that should RARELY be used clinically are:
a. LFF 5.0Hz & HFF 70Hz
b. LFF 5.0Hz & HFF 15Hz
c. LFF 0.1Hz & HFF 70Hz
d. LFF 0.1Hz & HFF 15Hz. Answer: b. LFF 5.0Hz & HFF 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. Answer: a. no effect on the activity being recorded
◉ A spike is printed out on paper and measures 16mm peak to peak, the sensitivity of the instrument is
7uV/mm and a calibration signal of 50uV causes a deflection of 7.1mm...what is the voltage of the spike?
a. 1.2uV
b. 112uV
c. 12uV
d. 24uV. Answer: b. 112uV
◉ What input voltage is necessary to give a calibration deflection between 5 and 10mm if the sensitivity
is 30uV/mm?
