ACNS Guidelines
Repeating ECI testing in pediatrics and neonates should be done _____ apart - answer
At least 24 hours
Repeat ECI for adults should be at least _____ apart - answer6 Hours
During Calibrations the recorded signals should be measured and be within _____ of
each other - answer+/- 5%
Which electrode should be used as the system reference? - answer An additional
electrode NOT included in the 10/10 or 10/20 systems
Why is it important to perform eye open and close? - answer• Some rhythms can be
masked by the alpha activity and are only visible when eyes are open
• Certain forms of eye movement may appear to be frontal delta or theta; eye
opening/closing helps to differentiate this
• Paroxysmal activity may appear only when eyes are opened or when the eyes are
closed
Minimum Horizontal Resolution is _____ pixels - answer1,280 pixels
Integrity of the recording system is checked in ECI in order to... - answer1) Verify the
electrode board is connected to the recording device
2) Prove that the montage settings match the electrode placement
Why is record storage on a server recommended over other digital media storage? (e.g.
DVD or optical drive) - answer1) To prevent data loss (servers have redundancy and
backup)
2) Full HIPAA compliance because it can record a full audit trail of every person
accessing the record
When should biocalibration be done? - answerOnly for analog machines
Why are needle electrodes not recommended for routine use? - answer1) Patient
discomfort
2) Risk of injury to tech
3) Higher impedances than surface electrodes
4) More susceptible to noise
For routine recordings, the LFF should be... - answerNo higher than 1 Hz (-3 dB)
, ACNS Guidelines state but depth should be... - answerAt least 16 bits per sample
When recording with a reduced electrode array in neonates, which electrodes must be
included? - answer1) Fp1 + Fp2
2) C3 + C4
3) Cz
4) T3 + T4
5) O1 + O2
6) A1 + A2
What should be noted within the EEG of routine recordings / of comatose patients? -
answer• LOC and any changes
• Any commands to the patient
• Movements or clinical seizures
• Frequent notations with standardized abbreviations
Comatose - visual, auditory, somatosensory stimuli applied and response documented
What Activations should be done in routine recordings? - answer1) Eyes open and
close
2) Photic
3) HV
4) Sleep
What system of electrode placement should be used in patients undergoing presurgical
evaluation? - answer10-10 System
Interelectrode impedances should not be below... - answer100 Ohms
When recording an EEG, the tech should use _____ montages - answerAt least 3
different montages including at least 1 reference montage
After calibrating, the tech should perform a visual review of what? - answer30 seconds
on system reference montage without the notch filter
Electrode impedances should exceed... - answer10 KOhms
For pediatric EEGs, when should HV and PS be performed? - answer1) HV at
beginning
2) PS at the end
This is done to maximize spontaneous sleep
In adult EEG, a minimum of _____ electrodes should be used - answer21 electrodes
Repeating ECI testing in pediatrics and neonates should be done _____ apart - answer
At least 24 hours
Repeat ECI for adults should be at least _____ apart - answer6 Hours
During Calibrations the recorded signals should be measured and be within _____ of
each other - answer+/- 5%
Which electrode should be used as the system reference? - answer An additional
electrode NOT included in the 10/10 or 10/20 systems
Why is it important to perform eye open and close? - answer• Some rhythms can be
masked by the alpha activity and are only visible when eyes are open
• Certain forms of eye movement may appear to be frontal delta or theta; eye
opening/closing helps to differentiate this
• Paroxysmal activity may appear only when eyes are opened or when the eyes are
closed
Minimum Horizontal Resolution is _____ pixels - answer1,280 pixels
Integrity of the recording system is checked in ECI in order to... - answer1) Verify the
electrode board is connected to the recording device
2) Prove that the montage settings match the electrode placement
Why is record storage on a server recommended over other digital media storage? (e.g.
DVD or optical drive) - answer1) To prevent data loss (servers have redundancy and
backup)
2) Full HIPAA compliance because it can record a full audit trail of every person
accessing the record
When should biocalibration be done? - answerOnly for analog machines
Why are needle electrodes not recommended for routine use? - answer1) Patient
discomfort
2) Risk of injury to tech
3) Higher impedances than surface electrodes
4) More susceptible to noise
For routine recordings, the LFF should be... - answerNo higher than 1 Hz (-3 dB)
, ACNS Guidelines state but depth should be... - answerAt least 16 bits per sample
When recording with a reduced electrode array in neonates, which electrodes must be
included? - answer1) Fp1 + Fp2
2) C3 + C4
3) Cz
4) T3 + T4
5) O1 + O2
6) A1 + A2
What should be noted within the EEG of routine recordings / of comatose patients? -
answer• LOC and any changes
• Any commands to the patient
• Movements or clinical seizures
• Frequent notations with standardized abbreviations
Comatose - visual, auditory, somatosensory stimuli applied and response documented
What Activations should be done in routine recordings? - answer1) Eyes open and
close
2) Photic
3) HV
4) Sleep
What system of electrode placement should be used in patients undergoing presurgical
evaluation? - answer10-10 System
Interelectrode impedances should not be below... - answer100 Ohms
When recording an EEG, the tech should use _____ montages - answerAt least 3
different montages including at least 1 reference montage
After calibrating, the tech should perform a visual review of what? - answer30 seconds
on system reference montage without the notch filter
Electrode impedances should exceed... - answer10 KOhms
For pediatric EEGs, when should HV and PS be performed? - answer1) HV at
beginning
2) PS at the end
This is done to maximize spontaneous sleep
In adult EEG, a minimum of _____ electrodes should be used - answer21 electrodes
