2024 ABRET EEG EXAM TEST BANK WITH 500

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2024 ABRET EEG EXAM TEST BANK WITH 500

REAL EXAM QUESTIONS AND CORRECT

ANSWERS ALREADY GRADED A+/ ABRET EEG

EXAM PREP LATEST 2024/2025 (QUESTIONS

AND 100% CORRECT ANSWERS)

An EEG record has three per second spike/wave discharges. Both the spike and the slow wave have voltages of 100 µV. If this discharge is recorded with a low frequency filter of 5 Hz and a sensitivity of 10 µV/mm, what would be the deflection of the spike and the wave?

• spike 10 mm, wave 6 mm
• spike 6 mm, wave 10 mm
• spike 10mm, wave 10 mm
• spike 6 mm, wave 6 mm - ANSWER-spike 10 mm, wave 6 mm

A high frequency setting of 35 Hz would attenuate 50 Hz muscle activity by approximately what percentage?

• 10%
• 20%
• 40%
• 100% - ANSWER-40%

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

• output voltage
• linear distortion 1 / 4

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• 60 Hz interference
• noise - ANSWER-noise

The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will be ____.

• downward
• upward
• absent
• sinusoidal - ANSWER-upward

Common Mode Rejection is ____.

• the ability of an amplifier to cancel out ECG artifact
• the characteristic of an amplifier that rejects external interference
• is dependent on the sampling rate
• controlled by the 60-cycle notch filter - ANSWER-the characteristic of an

amplifier that rejects external interference

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

• 0.5 Hz
• 5.0 Hz
• 10.0 Hz
• 0.1 Hz - ANSWER-0.1 Hz

According to ACNS Guidelines, Recording Clinical EEG on Digital Media requires monitors to have _____.

• Between 25 and 35 mm/second horizontal scaling and a maximum of 1000 data

points/second to accurately display EEG on the monitor screen. 2 / 4

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• Between 25 and 35 mm/second horizontal scaling and a minimum of 100 data

points /second to accurately display EEG on the monitor screen.

• Between 25 and 35 mm/second horizontal scaling and a maximum of 100 data

points/second to accurately display EEG on the monitor screen.

• Between 25 and 35 mm/second horizontal scaling and a minimum of 1000 data

points/second to accurately display EEG on the monitor screen. - ANSWER- 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 filters creating a very narrow band pass that should rarely be used clinically are _____.

• LF 5.0 Hz and HF 70 Hz
• LF 5.0 Hz and HF 15 Hz
• LF 0.1 Hz and HF 70 Hz
• LF 0.1 Hz and HF 15 Hz - ANSWER-LF 5.0 Hz and HF 15 Hz

The basic unit for measuring current flow is____.a.atomic weight b.Coulomb c.Volt d.Ampere - ANSWER-Ampere

The basic unit of resistance is____.a.Ohm b.Coulomb c.Ampere d.Volt - ANSWER-Ohm 3 / 4

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Which of the following is not a valid expression of Ohm's law?(in this equation E (electromotive force) is the dame as V (Voltage)

• R = E I or (R = V I)
• E = I R or (V = I R)
• I = E / R or (I = V/R)
• R = E / I or (R = V/ I) - ANSWER-R = E I or (R = V I)

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

• Cycles per second
• Volts
• Hertz
• Kilocycles - ANSWER-Volts

Which of the following describes the action of a capacitor?

• opposes changes in current flow
• converts alternating current to direct current
• creates a direct current resistance
• stores energy - ANSWER-stores energy

A circuit that allows some frequencies to pass through it, while others are blocked is a ____.

• resistor
• transistor
• filter
• reactor - ANSWER-filter
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