EEG BOARDS EXAM WITH
100% CORRECT ANSWERS
GRADED A+
Combinations of multiple derivations (electrode recording
combinations) correct answers >> What is a
montage?
Monopolar (referential)
Bipolar correct answers >> What are the 2 different
types of montages that are used?
Common Average Reference
Cz Reference
Ear Reference (Contralateral or ipsilateral) correct
answers >> What are some types of referential
montages that are used/
Longitudinal (anterior to posterior)
Transverse (left to right) correct answers >> What
are some types of bipolar montages that we use?
GRADED A+
,A series of derivations in which the same electrode is
used in input 2 of each amplifier correct answers >>
What is a referential montage?
Amplitude correct answers >> How are potentials
localized on a referential montage?
The reference must be placed in an electrically quiet spot
on the patient . If placed in an electrically busy area,
there will be contamination of all the other leads.
correct answers >> What is important about the
placement of the reference?
This occurs when the reference is no longer neutral,
meaning it has been obscured with an overriding
potential, whether mechanical or biological correct
answers >> What is reference contamination?
Contamination
Distortion of brain signals-if the CAR becomes part of the
electrical field, the electrodes nearest will cancel out and
those farthest will give false localization correct
answers >> What are the disadvantages to a
CAR(common Average Reference) montage?
Equal interelectrode distances between the two
hemispheres correct answers >> What is the
GRADED A+
, advantage of CAR(common Average Reference)
montage?
Equal Interelectrode distances correct answers >>
What is the advantage of a Cz reference montage?
Cant be used when the patient is asleep. Sleep potentials
come from the vertex and therefore contaminate all other
leads with sleep potentials correct answers >> What
is the disadvantage of a Cz reference montage?
-Little to no cancellation when using a contralateral ear
montage due to long interelectrode distances.
-Long interelectrode distances allow potentials to appear
higher amplitude than usual, making it easier to read
correct answers >> What are the advantages to an ear
reference montage?
-Contamination with EKG potentials
-Cancellation(when ipsilateral) due to reference becoming
a part of the electrical field correct answers >> What
are the disadvantages to an ear reference montage/
A montage that consists of an adjacent pair of electrodes
of the 10-20 system of electrode placement correct
answers >> What is a bipolar montage?
GRADED A+
100% CORRECT ANSWERS
GRADED A+
Combinations of multiple derivations (electrode recording
combinations) correct answers >> What is a
montage?
Monopolar (referential)
Bipolar correct answers >> What are the 2 different
types of montages that are used?
Common Average Reference
Cz Reference
Ear Reference (Contralateral or ipsilateral) correct
answers >> What are some types of referential
montages that are used/
Longitudinal (anterior to posterior)
Transverse (left to right) correct answers >> What
are some types of bipolar montages that we use?
GRADED A+
,A series of derivations in which the same electrode is
used in input 2 of each amplifier correct answers >>
What is a referential montage?
Amplitude correct answers >> How are potentials
localized on a referential montage?
The reference must be placed in an electrically quiet spot
on the patient . If placed in an electrically busy area,
there will be contamination of all the other leads.
correct answers >> What is important about the
placement of the reference?
This occurs when the reference is no longer neutral,
meaning it has been obscured with an overriding
potential, whether mechanical or biological correct
answers >> What is reference contamination?
Contamination
Distortion of brain signals-if the CAR becomes part of the
electrical field, the electrodes nearest will cancel out and
those farthest will give false localization correct
answers >> What are the disadvantages to a
CAR(common Average Reference) montage?
Equal interelectrode distances between the two
hemispheres correct answers >> What is the
GRADED A+
, advantage of CAR(common Average Reference)
montage?
Equal Interelectrode distances correct answers >>
What is the advantage of a Cz reference montage?
Cant be used when the patient is asleep. Sleep potentials
come from the vertex and therefore contaminate all other
leads with sleep potentials correct answers >> What
is the disadvantage of a Cz reference montage?
-Little to no cancellation when using a contralateral ear
montage due to long interelectrode distances.
-Long interelectrode distances allow potentials to appear
higher amplitude than usual, making it easier to read
correct answers >> What are the advantages to an ear
reference montage?
-Contamination with EKG potentials
-Cancellation(when ipsilateral) due to reference becoming
a part of the electrical field correct answers >> What
are the disadvantages to an ear reference montage/
A montage that consists of an adjacent pair of electrodes
of the 10-20 system of electrode placement correct
answers >> What is a bipolar montage?
GRADED A+
