EEG BOARD EXAM 2023 with verified questions and answers
1. What is the typical frequency range of alpha waves in an EEG recording?
o a) 0.5-4 Hz
o b) 4-8 Hz
o c) 8-13 Hz
o d) 13-30 Hz
Elaboration:
o Alpha waves are typically observed in the 8-13 Hz frequency range and are most
prominent when a person is awake but relaxed with their eyes closed.
o 0.5-4 Hz is the delta wave range, associated with deep sleep.
o 4-8 Hz is the theta wave range, associated with drowsiness and light sleep.
o 13-30 Hz is the beta wave range, associated with alertness and active thinking.
2. Which of the following EEG patterns is commonly associated with epilepsy?
o a) Alpha waves
o b) Beta waves
o c) Spikes and sharp waves
o d) Vertex waves
Elaboration:
o Spikes and sharp waves are transient, high-amplitude waveforms that are often
indicative of epileptic activity in the brain
o Alpha and beta waves are normal EEG rhythms
o Vertex waves are sharp transients seen during sleep
3. What is the International 10-20 System used for in EEG?
o a) Measuring the amplitude of EEG waves
o b) Classifying different types of seizures
o c) Standardizing electrode placement on the scalp
, o d) Determining the frequency of EEG waves
Elaboration:
o The International 10-20 System provides a standardized method for placing electrodes
on the scalp, ensuring consistency and comparability between EEG recordings.
4. Which of the following is NOT a common artifact in EEG recordings?
o a) Eye blinks
o b) Muscle activity
o c) Electrode movement
o d) K-complexes
Elaboration:
o Eye blinks, muscle activity, and electrode movement are common artifacts that can
contaminate EEG recordings.
o K-complexes are normal waveforms seen during sleep, not artifacts.
5. What is the purpose of photic stimulation during an EEG recording?
o a) To induce sleep
o b) To trigger or activate photosensitive epilepsy
o c) To reduce muscle artifact
o d) To enhance alpha wave activity
Elaboration:
o Photic stimulation involves flashing lights at different frequencies to assess a patient's
sensitivity to light and potentially trigger seizures in individuals with photosensitive
epilepsy
6. Which of the following EEG patterns is characteristic of a normal awake adult with their eyes
closed?
o a) Alpha rhythm
o b) Theta rhythm
o c) Delta rhythm
, o d) Spikes and sharp waves
Elaboration:
o A prominent alpha rhythm is typically seen in healthy adults when they are awake and
relaxed with their eyes closed.
o Theta rhythm is more common in drowsiness and light sleep
o Delta rhythm is associated with deep sleep
o Spikes and sharp waves are abnormal patterns associated with epilepsy.
7. What is the main difference between an EEG and an MEG (magnetoencephalography)?
o a) EEG measures electrical activity, while MEG measures magnetic fields generated by
brain activity
o b) EEG has better spatial resolution than MEG
o c) EEG is more expensive and less accessible than MEG
o d) EEG is used for clinical diagnosis, while MEG is primarily used for research
Elaboration:
o EEG directly measures the electrical activity of the brain using electrodes placed on the
scalp
o MEG measures the magnetic fields generated by the brain's electrical activity using
sensitive detectors
8. Which of the following is a clinical application of EEG?
o a) Diagnosing epilepsy
o b) Monitoring brain activity during surgery
o c) Evaluating sleep disorders
o d) All of the above
Elaboration:
o EEG is a versatile tool used in various clinical settings for:
o Diagnosing epilepsy: Identifying abnormal brain activity patterns associated with
seizures
, o Monitoring brain activity during surgery: Ensuring adequate brain function and
detecting any potential complications
o Evaluating sleep disorders: Assessing sleep stages and identifying abnormalities like
sleep apnea or narcolepsy
9. What is the function of a differential amplifier in EEG recording?
o a) To amplify the EEG signal
o b) To reduce common-mode noise and enhance the signal-to-noise ratio
o c) To filter out specific frequency bands
o d) To convert the analog EEG signal to a digital signal
Elaboration:
o A differential amplifier subtracts the common electrical noise present in both input
electrodes, thereby isolating and amplifying the true brain signal difference between the
two electrodes
10. What is the typical duration of an EEG recording for routine clinical purposes?
o a) 5-10 minutes
o b) 20-30 minutes
o c) 1-2 hours
o d) Overnight
Elaboration:
o A standard EEG recording for routine clinical evaluation usually lasts around 20-30
minutes, allowing enough time to capture various brain states and potential
abnormalities
11. Which of the following is an advantage of digital EEG recording over analog recording?
o a) Increased susceptibility to noise and interference
o b) Limited storage and analysis capabilities
o c) Improved signal quality and flexibility in data manipulation
o d) Requires specialized equipment and software
Elaboration:
1. What is the typical frequency range of alpha waves in an EEG recording?
o a) 0.5-4 Hz
o b) 4-8 Hz
o c) 8-13 Hz
o d) 13-30 Hz
Elaboration:
o Alpha waves are typically observed in the 8-13 Hz frequency range and are most
prominent when a person is awake but relaxed with their eyes closed.
o 0.5-4 Hz is the delta wave range, associated with deep sleep.
o 4-8 Hz is the theta wave range, associated with drowsiness and light sleep.
o 13-30 Hz is the beta wave range, associated with alertness and active thinking.
2. Which of the following EEG patterns is commonly associated with epilepsy?
o a) Alpha waves
o b) Beta waves
o c) Spikes and sharp waves
o d) Vertex waves
Elaboration:
o Spikes and sharp waves are transient, high-amplitude waveforms that are often
indicative of epileptic activity in the brain
o Alpha and beta waves are normal EEG rhythms
o Vertex waves are sharp transients seen during sleep
3. What is the International 10-20 System used for in EEG?
o a) Measuring the amplitude of EEG waves
o b) Classifying different types of seizures
o c) Standardizing electrode placement on the scalp
, o d) Determining the frequency of EEG waves
Elaboration:
o The International 10-20 System provides a standardized method for placing electrodes
on the scalp, ensuring consistency and comparability between EEG recordings.
4. Which of the following is NOT a common artifact in EEG recordings?
o a) Eye blinks
o b) Muscle activity
o c) Electrode movement
o d) K-complexes
Elaboration:
o Eye blinks, muscle activity, and electrode movement are common artifacts that can
contaminate EEG recordings.
o K-complexes are normal waveforms seen during sleep, not artifacts.
5. What is the purpose of photic stimulation during an EEG recording?
o a) To induce sleep
o b) To trigger or activate photosensitive epilepsy
o c) To reduce muscle artifact
o d) To enhance alpha wave activity
Elaboration:
o Photic stimulation involves flashing lights at different frequencies to assess a patient's
sensitivity to light and potentially trigger seizures in individuals with photosensitive
epilepsy
6. Which of the following EEG patterns is characteristic of a normal awake adult with their eyes
closed?
o a) Alpha rhythm
o b) Theta rhythm
o c) Delta rhythm
, o d) Spikes and sharp waves
Elaboration:
o A prominent alpha rhythm is typically seen in healthy adults when they are awake and
relaxed with their eyes closed.
o Theta rhythm is more common in drowsiness and light sleep
o Delta rhythm is associated with deep sleep
o Spikes and sharp waves are abnormal patterns associated with epilepsy.
7. What is the main difference between an EEG and an MEG (magnetoencephalography)?
o a) EEG measures electrical activity, while MEG measures magnetic fields generated by
brain activity
o b) EEG has better spatial resolution than MEG
o c) EEG is more expensive and less accessible than MEG
o d) EEG is used for clinical diagnosis, while MEG is primarily used for research
Elaboration:
o EEG directly measures the electrical activity of the brain using electrodes placed on the
scalp
o MEG measures the magnetic fields generated by the brain's electrical activity using
sensitive detectors
8. Which of the following is a clinical application of EEG?
o a) Diagnosing epilepsy
o b) Monitoring brain activity during surgery
o c) Evaluating sleep disorders
o d) All of the above
Elaboration:
o EEG is a versatile tool used in various clinical settings for:
o Diagnosing epilepsy: Identifying abnormal brain activity patterns associated with
seizures
, o Monitoring brain activity during surgery: Ensuring adequate brain function and
detecting any potential complications
o Evaluating sleep disorders: Assessing sleep stages and identifying abnormalities like
sleep apnea or narcolepsy
9. What is the function of a differential amplifier in EEG recording?
o a) To amplify the EEG signal
o b) To reduce common-mode noise and enhance the signal-to-noise ratio
o c) To filter out specific frequency bands
o d) To convert the analog EEG signal to a digital signal
Elaboration:
o A differential amplifier subtracts the common electrical noise present in both input
electrodes, thereby isolating and amplifying the true brain signal difference between the
two electrodes
10. What is the typical duration of an EEG recording for routine clinical purposes?
o a) 5-10 minutes
o b) 20-30 minutes
o c) 1-2 hours
o d) Overnight
Elaboration:
o A standard EEG recording for routine clinical evaluation usually lasts around 20-30
minutes, allowing enough time to capture various brain states and potential
abnormalities
11. Which of the following is an advantage of digital EEG recording over analog recording?
o a) Increased susceptibility to noise and interference
o b) Limited storage and analysis capabilities
o c) Improved signal quality and flexibility in data manipulation
o d) Requires specialized equipment and software
Elaboration:
