I-G. Electrode properties placement / 10-20 system Flashcards
What is the typical clinical presentation of Creutzfeldt-Jakob disease?
A) Mild dementia, focal seizures, gradual improvement after treatment
B) Seizures, dementia, coma, chronic vegetative state
C) Weakness, choreiform movements, blindness, death
D) Progressive dementia, bilateral rigidity and myoclonus, stupor, death
Progressive dementia, bilateral rigidity and myoclonus, stupor, death
FT9 or T1 and FT10 or T2 electrodes record from the
A) posterior temporal lobe
B) nasopharynx
C) anterior temporal lobe
D) sphenoid sinuses
anterior temporal lobe.
If the nasion to inion measurement is 40 cm, what is the distance between CZ and PZ?
A) 20 cm
B) 8 cm
C) 2 cm
D) 4 cm
8 cm
Patients with which of the following diseases would most likely have a normal tracing?
A) Creutzfeldt-Jakob disease
B) Advanced Alzheimer’s disease
C) Herpes encephalitis
D) Multiple sclerosis
Multiple sclerosis
If the measurement between preauricular point and T3 is 3.2 cm what is the distance between C3 and CZ?
A) 6.4 cm
B) 6.0 cm
C) 12.8 cm
D) 3.2 cm
6.4 cm
Which electrode type gives the LEAST distortion of low frequencies?
A) Platinum
B) Silver-silver chloride
C) Gold
D) Stainless steel
Silver-silver chloride
TUBEROUS SCLEROSIS
A) a condition seen only in adults
B) contagious
C) treatable with anti convulsants
D) genetic
genetic
While performing an EEG hookup, C4 must be moved 1 cm posteriorly due to an incision on the patient’s scalp. What else must the technologist do?
A) Move C3 1 cm posteriorly
B) Move all electrodes 1 cm posteriorly
C) Move F4 1 cm posteriorly
D) Move no other electrodes other than C4
Move C3 1 cm posteriorly
If the distance from the right preauricular to the right outer canthus measures 9cm, where should electrode T2 be placed?
A) 3 cm out from the right preauricular point and 1 cm up
B) 1 cm out from the right preauricular point and 1 cm down
C) 3 cm out from the right outer canthus and 1 cm up
D) 1 cm out from the right outer canthus and 1 cm down
3 cm out from the right preauricular point and 1 cm up
If a patient has a circumference measurement of 55 cm, which of the following interelectrode distances can be calculated?
A) C3 to Cz
B) O1 to O2
C) F7 to Fz
D) Fz to Oz
O1 and O2
The onset of Sturge-Weber disease is typically during:
A) Adulthood
B) Infancy
C) Elderly
D) Adolescence
Infancy
When a large amount of electrode paste is used to hold EEG electrodes in place, the total recording area will be the
A) diameter of the EEG electrode
B) inner plus outer surface area of the EEG electrode
C) total scalp surface area of the paste
D) inner surface area of the EEG electrode
total scalp surface area of the paste.
Using the International 10-20 electrode placements, if the distance from nasion to inion is 34 cm, what is the distance from FZ to Oz?
A) 30.6 cm
B) 23.8 cm
C) 27.2 cm
D) 20.4 cm
20.4 cm
Moya Moya disease is associated with:
A) metabolism
B) decreased blood flow to cerebral tissue
C) cerebral lesions
D) calcifications in the brain
decreased blood flow to cerebral tissue
In which of the following would a normal EEG be expected?
A) Anoxia
B) Multiple Sclerosis
C) Juvenile Myoclonic Epilepsy
D) Benign Rolandic Epilepsy
Multiple Sclerosis
