EEG BOARD PREP questions and answers 2026\2027 A+ Grade
The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will be
- correct answer UPWARD
Common Mode Rejection
- correct answer the characteristic of an amplifier that rejects external interference
WHICH OF THE FOLLOWING IS MOST ATTENUATED BY A LOW FREQUENCY FILTER OF 1HZ
- correct answer 0.1 HZ
TIME CONSTANT IS DEFINED AS THE TIME REQUIRED TO...
- correct answer FOR THE DEFLECTION TO FALL (DECAY) TO 67% 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
- correct answer SPIKE 10MM, WAVE 6MM
A HIGH FREQUENCY SETTING OF 35HZ WOULD ATTENUATE 50HZ MUSCLE ACTIVITY BY APPROXIMATELY
WHAT PERCENTAGE?
- correct answer 40%
ACCORDING TO ACNS GUIDELINES, RECORDING CLINICAL EEG ON DIGITAL MEDIA REQUIRES MONITORS
TO HAVE WHAT
- correct answer BETWEEN 25 AND 35MM/SECOND HORIZONTAL SCALING AND A MINIMUM OF 100
DATA POINTS/SECOND TO ACCURATELY DISPLAY EEG ON THE MONITOR SCREEN
,IN A RECORD WITH 10HZ ALPHA ACTIVITY. WHEN THE DISPLAY EPOCH IS CHANGED FROM 10 SECONDS
PER DISPLAY SCREEN TO 20 SECONDS PER DISPLAY SCREEN, THE FREQUENCY OF THE ACITIVTY WILL BE
WHAT?
- correct answer 10HZ
GUIDELINES FOR RECORDING DIGITAL EEG ARE WRITTEN BY WHO?
- correct answer THE AMERICAN CLINICAL NEUROPHYSIOLOGY SOCIETY (ACNS)
THE TERM RAM MEANS WHAT
- correct answer TEMPORARY MEMORY STORAGE THAT IS CRITICAL TO RAPID COMPUTER OPERATIONS
THE ELECTRODE SITE THAT IS LOCATED 1CM ABOVE, ONE THIRD THE DISTANCE OUT FROM THE LEFT
EXTERNAL AUDITORY MEATUS TOWARDS THE LEFT OUTER CANTHUS IS CALLED WHAT
- correct answer T1 OR F9
Due to a central scalp lesion, C4 has to be relocated 4mm anteriorly. The technologist should:
a. relocate C3 4mm anteriorly
b. make no other placement changes
c. relocate P3 4mm anteriorly
d. relocate all electrodes in the right parasagittal plane 4mm anteriorly
- correct answer A. RELOCATE C3 4MM ANTERIORLY
IN A REFERENTIAL MONTAGE, HOW IS THE ORIGIN OF THE POTENTIAL DETERMINED?
- correct answer AMPLITUDE
WHEN RECORDING FOR ECI, INTERELECTRODE IMPEDANCES SHOULD BE AT LEAST____ OHMS, BUT LESS
THAN _____ OHMS.
- correct answer 100----10,000
WHEN RECORDING FOR ECI, IT IS RECOMMENDED THAT THE SENSITIVITY BE _____ uV/MM AND THE
LOW FILTER SHOULD NOT BE HIGHER THAN ____HZ. FOR AT LEAST____MINS OF RECORDING.
- correct answer 2uV, 1.0HZ, 30 MINS
, THE TRACTS CONNECTING THE RIGHT AND LEFT HEMISPHERES ARE CALLED WHAT?
- correct answer CORPUS CALLOSUM
THE CENTRAL SULCUS (FISSURE OF ROLANDO) DEMARCATES WHAT?
- correct answer FRONTAL AND PARIETAL LOBES
THE TRIGEMINAL NERVE DOES?
- correct answer IS THE MAJOR SENSORY NERVE OF THE FACE
A SUBARACHNOID HEMORRHAGE OCCURS WHERE?
- correct answer BETWEEN TWO LAYERS OF THE MENINGES
THE CARDIOVASCULAR AND RESP CENTERS FOR AUTOMATIC CONTROL OF HEART RATE AND
RESPIRATION ARE FOUND IN?
- correct answer MEDULLA
Thrombosis of the anterior cerebral artery is most likely due to cause:
a. nystagmus
b. contralateral lower extremity weakness
c. contralateral facial weakness
d. aphasia
- correct answer CONTRALATERAL LOWER EXTREMITY WEAKNESS
Thrombosis of the right middle cerebral artery would most likely cause
- correct answer LEFT SIDED PARALYSIS, PRIMARILY OF THE FACE AND ARM
INFLAMMATION OF THE COVERINGS OF THE BRAIN OR SPINAL CORD IS CALLED ?
- correct answer MENINGITIS
A MALIGNANT TUMOR PRIMARILY SEEN IN CHILDREN MAY BE?
- correct answer MEDULLOBLASTOMA
The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will be
- correct answer UPWARD
Common Mode Rejection
- correct answer the characteristic of an amplifier that rejects external interference
WHICH OF THE FOLLOWING IS MOST ATTENUATED BY A LOW FREQUENCY FILTER OF 1HZ
- correct answer 0.1 HZ
TIME CONSTANT IS DEFINED AS THE TIME REQUIRED TO...
- correct answer FOR THE DEFLECTION TO FALL (DECAY) TO 67% 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
- correct answer SPIKE 10MM, WAVE 6MM
A HIGH FREQUENCY SETTING OF 35HZ WOULD ATTENUATE 50HZ MUSCLE ACTIVITY BY APPROXIMATELY
WHAT PERCENTAGE?
- correct answer 40%
ACCORDING TO ACNS GUIDELINES, RECORDING CLINICAL EEG ON DIGITAL MEDIA REQUIRES MONITORS
TO HAVE WHAT
- correct answer BETWEEN 25 AND 35MM/SECOND HORIZONTAL SCALING AND A MINIMUM OF 100
DATA POINTS/SECOND TO ACCURATELY DISPLAY EEG ON THE MONITOR SCREEN
,IN A RECORD WITH 10HZ ALPHA ACTIVITY. WHEN THE DISPLAY EPOCH IS CHANGED FROM 10 SECONDS
PER DISPLAY SCREEN TO 20 SECONDS PER DISPLAY SCREEN, THE FREQUENCY OF THE ACITIVTY WILL BE
WHAT?
- correct answer 10HZ
GUIDELINES FOR RECORDING DIGITAL EEG ARE WRITTEN BY WHO?
- correct answer THE AMERICAN CLINICAL NEUROPHYSIOLOGY SOCIETY (ACNS)
THE TERM RAM MEANS WHAT
- correct answer TEMPORARY MEMORY STORAGE THAT IS CRITICAL TO RAPID COMPUTER OPERATIONS
THE ELECTRODE SITE THAT IS LOCATED 1CM ABOVE, ONE THIRD THE DISTANCE OUT FROM THE LEFT
EXTERNAL AUDITORY MEATUS TOWARDS THE LEFT OUTER CANTHUS IS CALLED WHAT
- correct answer T1 OR F9
Due to a central scalp lesion, C4 has to be relocated 4mm anteriorly. The technologist should:
a. relocate C3 4mm anteriorly
b. make no other placement changes
c. relocate P3 4mm anteriorly
d. relocate all electrodes in the right parasagittal plane 4mm anteriorly
- correct answer A. RELOCATE C3 4MM ANTERIORLY
IN A REFERENTIAL MONTAGE, HOW IS THE ORIGIN OF THE POTENTIAL DETERMINED?
- correct answer AMPLITUDE
WHEN RECORDING FOR ECI, INTERELECTRODE IMPEDANCES SHOULD BE AT LEAST____ OHMS, BUT LESS
THAN _____ OHMS.
- correct answer 100----10,000
WHEN RECORDING FOR ECI, IT IS RECOMMENDED THAT THE SENSITIVITY BE _____ uV/MM AND THE
LOW FILTER SHOULD NOT BE HIGHER THAN ____HZ. FOR AT LEAST____MINS OF RECORDING.
- correct answer 2uV, 1.0HZ, 30 MINS
, THE TRACTS CONNECTING THE RIGHT AND LEFT HEMISPHERES ARE CALLED WHAT?
- correct answer CORPUS CALLOSUM
THE CENTRAL SULCUS (FISSURE OF ROLANDO) DEMARCATES WHAT?
- correct answer FRONTAL AND PARIETAL LOBES
THE TRIGEMINAL NERVE DOES?
- correct answer IS THE MAJOR SENSORY NERVE OF THE FACE
A SUBARACHNOID HEMORRHAGE OCCURS WHERE?
- correct answer BETWEEN TWO LAYERS OF THE MENINGES
THE CARDIOVASCULAR AND RESP CENTERS FOR AUTOMATIC CONTROL OF HEART RATE AND
RESPIRATION ARE FOUND IN?
- correct answer MEDULLA
Thrombosis of the anterior cerebral artery is most likely due to cause:
a. nystagmus
b. contralateral lower extremity weakness
c. contralateral facial weakness
d. aphasia
- correct answer CONTRALATERAL LOWER EXTREMITY WEAKNESS
Thrombosis of the right middle cerebral artery would most likely cause
- correct answer LEFT SIDED PARALYSIS, PRIMARILY OF THE FACE AND ARM
INFLAMMATION OF THE COVERINGS OF THE BRAIN OR SPINAL CORD IS CALLED ?
- correct answer MENINGITIS
A MALIGNANT TUMOR PRIMARILY SEEN IN CHILDREN MAY BE?
- correct answer MEDULLOBLASTOMA
