Input 1 = + 100 μV and Input II = + 100 μV. The waveform will:

remain at a flat neutral position with no deflection

Select from the list below, the false statement about current.

Current is measured in coulombs

Applying brief firm pressure to Erbs Point

form of painful stimulation to maximum alertness during EEG

is the major sensory nerve of the face

What would be a good technical description of the sample?

3 per second spike and slow wave, classic

Relationship between voltage, sensitivity and deflection is: . (Select all that are correct.)

voltage is equal to sensitivity multiplied by deflection, sensitivity is equal to voltage divided by deflection, deflection is equal to voltage divided by sensitivity

The patient with narcolepsy _____.

often has episodes of weakness precipitated by laughter

Describe sample, note documentation nurse pricked patient's finger at the onset of the sample

Electrocerebral inactivity (ECI, formerly ECS)

What should tech do if they suspect that the EEG channels are recording EKG artifact?

Monitor EKG & compare timing. Change to bipolar montage.

Which of the following is related to an alpha coma pattern?

an atypical distribution of alpha

Independent, bilateral spikes are considered ABM except in which of the following conditions?

If 14 and/or 6 Hz positive spikes

How would you describe this sample?

Photic driving, with minor photomyoclonic response

Keeping equipment clean is very important because: (select all that apply)

electrode paste contain ingredients that are corrosive., dust within the CPU can cause problems, food particles & liquid are damaging equipment, unclean surfaces in can transmit disease

Describe the sample (30 second page with sensitivity of 50 μV/mm)

tonic-clonic seizure and muscle activity

Federal law bans an EEG technologist from the following: (Select all that apply.)

Smoking in the work area, Eating and drinking in the work area, Handling a contact lens in the work area, Applying any cosmetic including lip balm in the work area

Route all power cords and cables

away from walkways and so they do not cross each other

Rare fatal do, measles, kids, dementia, myoclonic jerks & szs; EEG periodic complexes 4 – 15 s

Subacute sclerosing panencephalitis

The drowsy recording of a normal adult

is a low voltage mixture of rhythms

What is the stage of sleep and what patterns are present?

Stage II sleep, spindles and vertex waves, K complexes

Common Mode Rejection is

characteristic of amplifier rejects external interference

What type of artifact would a Vagal Nerve Stimulator produce on an EEG recording?

↓ voltage 60 Hz scalp leads; ↑ voltage 60 Hz EKG leads

The distance from Fz to Pz is

40% of the distance between the nasion and the inion

Elderly pt who notes difficulty in learning the names of new neighbors & recalling old friends

most likely has age associated memory impairment

studbud

Duplicate of EEG Part 1 Practice Exam.1

164 termsStudBud Administration20 plays

EEG 997 broken into 6 parts (as well as jumble questions)

Flashcards164 cardsFPractice quizPHost liveL

Questions 164

Answers

1
Input 1 = + 100 μV and Input II = + 100 μV. The waveform will:
deflect downward
remain at a flat neutral position with no deflection
deflect upward
2
Select from the list below, the false statement about current.
Current is measured in coulombs
Current may be AC or DC
Current is movement of electrons in a conductor
Current flows where source of voltage & conductive pathway
3
Applying brief firm pressure to Erbs Point
something done in Evoked Potentials only
is a way to prep the site for an electrode placement
form of painful stimulation to maximum alertness during EEG
will help relax the patient
4
The trigeminal nerve
aids in swallowing
is the major sensory nerve of the face
permits eye movement
permits tongue movement
5
What would be a good technical description of the sample?
hypnagogic hypersynchrony
blink artifact
generalized slowing
3 per second spike and slow wave, classic
6
The localization method used in referential montages is:
phase reversal
area of greatest amplitude
all of the above
areas of cancellation aka areas of equipotential
7
Relationship between voltage, sensitivity and deflection is: . (Select all that are correct.)
voltage is equal to sensitivity multiplied by deflection
sensitivity is equal to voltage divided by deflection
deflection is equal to voltage divided by sensitivity
sensitivity is equal to voltage times deflection
8
The most common artifact seen on an EEG recording is
Pulse artifact
Nystagmus
Ballistocardiographic artifact
Bell's Phenomena artifact
9
The patient with narcolepsy _____.
often has episodes of weakness precipitated by laughter
is an obese male who snores loudly
has an epileptiform EEG
has a space occupying lesion in the brain
10
Describe sample, note documentation nurse pricked patient's finger at the onset of the sample
Electrocerebral inactivity (ECI, formerly ECS)
Disconnected power cord
N3
Low voltage normal background
11
Deflection occurs if calibration input is set at 50 μV & sensitivity is set at 7 μV/mm?
1 mm deflection
10 mm deflection
5 mm deflection
7 mm deflection
12
What should tech do if they suspect that the EEG channels are recording EKG artifact?
Ask the patient to relax
Ask the patient to roll onto their side.
Monitor EKG & compare timing. Change to bipolar montage.
Use a straingage around the patient's upper chest.
13
Which of the following is related to an alpha coma pattern?
is only present when the patient is alert and oriented
usually indicates a good prognosis
reactivity to external stimuli
an atypical distribution of alpha
14
At a sensitivity of 30μV/mm, how much voltage is represented by 10 mm of deflection?
100 μV
3 μV
300 μV
30 μV
15
The discovery of electromagnetism lead to the development of
thermography
galvanometers
blood pressure monitors
16
Voltage of waveform, if the sensitivity is set at 7uV/mm?
126 μV
86 μV
187 μV
242 μV
17
CJD (Creutzfeldt-Jakob Disease) form of transmission:
fungus
virus
bacteria
prions
18
Independent, bilateral spikes are considered ABM except in which of the following conditions?
When found in the temporal head regions
When present in the awake adult
If 14 and/or 6 Hz positive spikes
If PLEDs
19
Charge is measured in
coulombs
amperes
cathodes
anodes
20
Neonate is born at 29 wks GA. EEG performed when 8 wks old. Conceptional age is _ weeks
33
21
37
42
21
What artifact is noted at electrode "O2"?
EKG artifact
EOG artifact
nystagmus
respiration artifact
22
How would you describe this sample?
Massive myoclonic jerking
3 per second spike and slow wave, classic
Photic driving, with minor photomyoclonic response
Lateral Rectus spikes
23
Keeping equipment clean is very important because: (select all that apply)
electrode paste contain ingredients that are corrosive.
dust within the CPU can cause problems
food particles & liquid are damaging equipment
unclean surfaces in can transmit disease
24
Describe the sample (30 second page with sensitivity of 50 μV/mm)
tonic-clonic seizure and muscle activity
absence seizure
complex partial seizure
focal spikes
25
Federal law bans an EEG technologist from the following: (Select all that apply.)
Smoking in the work area
Eating and drinking in the work area
Handling a contact lens in the work area
Applying any cosmetic including lip balm in the work area
26
Causes decreased CO₂, vasoconstriction & ↓ peripheral blood flow. (select all that apply)
hypocapnia
Cheyne-Stokes Breathing
hyperventilation
Valsalva maneuver
27
A surface positive event found in the occipital head regions during drowsiness:
POSTS
BETS
sleep spindles
14 & 6 Hz positive spikes
28
A capacitor is a device that
diverts an electric charge
repells an electric charge
measures an electric charge
stores an electric charge
29
Involuntary motor &/ vocal tics, premonitory urges, onset in childhood or adolescence:
Sturge-Weber Syndrome
Tourette's Syndrome
Rasmussen's Syndrome
Reyes Syndrome
30
How much deflection will occur if the calibration input is set at 20uV & sensitivity is7uV/mm?
5 mm deflection
7 mm deflection
10 mm deflection
3 mm deflection
31
Route all power cords and cables
under the bed
toward the electrical outlet nearest the doorway
away from walkways and so they do not cross each other
32
What artifact is seen in the anterior temporal and frontal polar leads on this sample?
Pulse
FIRDA
Nystagmus
Lateral Rectus
33
Slow, rolling eye movements are seen
during drowsiness
in stage III sleep
during wakefulness with eyes open
in narcolepsy
34
Unknown cause, may follow viral infection in kids taken ASA; n/v, personality Δ, szs & LOC
Reyes Syndrome
Todd’s Paralysis
Rassmussen’s Encephalitis
Paget’s Disease
35
Rare fatal do, measles, kids, dementia, myoclonic jerks & szs; EEG periodic complexes 4 – 15 s
Subacute sclerosing panencephalitis
Creutzfeldt-Jakob Disease
Bacterial Meningitis
Mycosis
36
Never use an extension cord with END instruments.
true
false
37
The basic unit of resistance is
volt
ampere
coulomb
ohm
38
Which of the following sleep transients is well defined by age 2 to 3 months?
K complexes
POSTS
V waves
sleep spindles
39
It is common for defect in skull, resulting from surgery or accident, to produce which pattern?
BETS
breach rhythm
Mu rhythm
spindles
40
The drowsy recording of a normal adult
is usually not seen on the EEG
is a low voltage mixture of rhythms
41
What is the stage of sleep and what patterns are present?
Stage IV sleep, greater than 50% delta
Stage III, less than 50% delta
Stage II sleep, spindles and vertex waves, K complexes
REM, Saw toothed rapid lateral eye mvts, low voltage bkgd
42
Common Mode Rejection is
characteristic of amplifier rejects external interference
is dependent on the sampling rate
the ability of an amplifier to cancel out ECG artifact
controlled by the 60-cycle notch filter
43
Body tissue contains excessive fluid:
Inflammation
edema
hyperplasia
myelitis
44
Most pts don't need procedures explained, to save time just start measuring head as soon sat ↓.
False
True
45
Time constant is measured in
millimeters
microvolts per millimeter
seconds
microvolts
46
What is the prominent feature of this sample?
RMTD
14 & 6 Hz positive bursts
artifact drip
PLEDs
47
What type of artifact would a Vagal Nerve Stimulator produce on an EEG recording?
isolated spike artifacts seen in the temporal electrodes
↓ voltage 60 Hz scalp leads; ↑ voltage 60 Hz EKG leads
rhythmic delta in the frontal areas
theta bursts of a few seconds duration
48
The distance from Fz to Pz is
40% of the distance between the nasion and the inion
identical to the distance from C3 to P3
20% of the distance between the nasion and the inion
identical to the distance from the nasion to Fz
49
Elderly pt who notes difficulty in learning the names of new neighbors & recalling old friends
most likely is experiencing retrograde amnesia
probably has Parkinson's Syndrome
likely to have an aneurysm
most likely has age associated memory impairment
50
An increased number of white blood cells
encephalitis
inflammation
leukocytosis
meningitis
51
The artifact from palatal myoclonus is most evident in the EEG derivation
Fp1-Fp2
O1-O2
C3-C4
A1-A2
52
A fourth degree burn involves
Leathery appearance
Bone and other tissue
Dryness
Blistering
53
Under HIPAA, congress provided civil & criminal penalties for entities that misuse PHI.
true
false
54
What are the possibilities of the origin of the slowing in this sample?
lateral eye movement
Vertical Eye movement
Gen. intermittent slowing, may be normal elderly drowsy pts
Artifact from the tongue (Glossokinetic artifact)
55
Café-au-lait spots and neurofibromas are associated with
Sturge-Weber Syndrome
Spina bifida
Von Recklinghousen’s disease
Friedreich’s ataxia
56
Benign Rolandic Epilepsy is associated with
no structural pathology
structural pathology
developmental selay
intractable seizures
57
It is common for a defect in skull either from surgery or injury to produce which patterns:
mu rhythm
breach rhythm
wicket spikes
focal slowing
58
The frequency range of beta is
frequencies of 14 Hz or higher
frequencies of 14 Hz or lower
2-14 Hz
0.5 to 5 Hz
59
The term prevalence refers to
pts of defined population given diagnosis at moment
number of new pts diagnosis appearing over time
the number of symptoms accompanying a disease
the intensity of a patient's symptoms
60
Why is the Wilson Lawsuit an important marker in EEG technology? (Select all that apply.)
Proves improper disinfection can spread disease
represented a nosocomial infection acquired in an EEG lab
It was the largest outbreak of Hepatitis B in history
It was caused by a single EEG tech
61
END tech can make test appear very _ & works w/_ is most likely to get the patient relaxed
intense, complexity and scientific mystery
difficult, efficiency and purpose
complicated, speed and exasperation
simple, ease and efficiency
62
Reactivity of brainwave patterns
difference in electrical potential between 2 electrodes
is a change in appearance in response to a stimulus
is an abnormal finding
63
Normal brain function is dependent on adequate _____ and _______.
blood pressure, leukocytosis
IQ, psychotropic medication
circulation, oxygenation
background frequency, photic driving
64
The technologist is expected to wash his/her hands immediately after removing gloves.
No, if gloves worn hands clean enough for the next task
Yes.
65
6 month old pt, which of the choices best describes the sample?
Normal
Phantom spike and wave
Burst suppression
Infantile spasms with hypsarrhythmia
66
Waterless gel or foam antiseptics may be used
When hands are visibly soiled
Only when soap and water are not immediately available
Instead of soap and water
67
No matter what type of eye monitoring electrode placements you use, you should always
place the electrodes above the eyes
place one electrode above and one below the eyes
place the electrodes below the eyes
test function pt move eyes up, down, lt & rt, documenting
68
The single most important source of information in reducing diagnostic uncertainty
is the history
is the patient's spouse
is the patient's mother
is the EEG
69
How would a technologist monitor glossokinetic artifact by using additional electrodes?
Superior Outer Canthus to Inferior Outer Canthus
Inferiororbital electrodes
One electrode on the patient's jaw and one under the chin
Placing 2 electrodes on 1 hand & placing hand on chest
70
To document maximum alertness during the recording
calling name, clap, or painful stim if patient is in a coma
ask the nurse for sedation
make sure pt had several cups of coffee or soda
turn up the volume on the TV
71
Name the normal variant in the illustration?
breach rhythm
wicket spikes
BETS
mu rhythm
72
Recording EEG signals that are very low in amplitude in midst of 60 Hz noise because
special coating on EEG electrodes shield from 60 Hz activity
copper shielding in the patient rooms
of characteristic of CMR in the differential amplifier
phase reversal
73
In this adult pattern, what is seen in this sample and is it normal or abnormal?
RMTD
alpha coma
abnormal with asymmetrical sleep spindles/left CVA
focal slowing
74
Required to have a P & P Manual accessibleto employees
false
true
75
Identify the diffuse low voltage spikes in this sample?
small sharp spikes
electrode artifacts
ECG artifact
Benign epileptiform transients of sleep
76
Color filters can sometimes block photoconvulsive responses
true
false
77
Electrocerebral inactivity is defined as
level 5 on the Glasgow Coma Scale
exposure to extended and uninterrupted periods of cable TV
nonresponsiveness to painful stimulation & calling name
absence of all electrical activity of cerebral origin
78
Which of the following best describes what is seen in this sample?
Mu
Triphasic waves
Multiple K-complexes
Wicket spikes
79
What is the prominent feature of this sample?
Rhythmic Mid Temporal Discharge
Phantom spike and wave
PLED’s
14 and 6 Hz positive bursts
80
The EEG change most often seen with Sturge-Weber Syndrome is
3 Hz generalized spike and wave
electrical status epilepticus in sleep
voltage depression over the affected hemisphere
triphasic waves
81
Vertex transients or "V waves" are found in what stage of sleep?
Stage III exclusively
Stage I and Stage II
REM Sleep
Stage I exclusively
82
The technical standards for performing EEG evaluations for electrocerebral incativity are set
ASET
ABRET
ASNM
ACNS
83
Define the two high voltage discharges in this sample (sensitivity 50 μV/mm)?
Myoclonic seizure
EMG artifact
Normal pattern with swallow artifact
Burst suppression
84
What does HIPAA stand for?
Hospital In Patient Awareness Act
Health Insurance Portability and Accountability Act
Hospital Information Privacy Awareness Act
Health Information Privacy and Accountability Act
85
Which of the following is not a distinct characteristic used to describe EEG waveforms?
polarity
periodicity
dimension
morphology
86
The two steps involving skin preparation before electrode application are
wash electrodes & skin same solution to avoid electrode pops
separate the hair into four sections and clip in place
removal of horny layer, scratch to reduce motion potentials
wash skin with liniment soap and air dry the skin
87
Extra care should be taken when performing END testing on critically ill pts at bedside because
instruments & monitors in ICU may attract lightning strikes
They may have an indwelling heart catheter
patients may act as capacitors and hold electric charge
Unconscious or unresponsive & can't tell what they feel
88
Grid 1 has an input of (-70 μV) and Grid 2 has an input of (-35μV)
105 μV and upward
105 μV and downward
35 μV and upward
35 μV and downward
89
Describe pattern with onset aprox. 7 s into sample upon stimulation of thiscomatose patient?
Focal slowing
FIRDA
SIRPID
OIRDA
90
No alteration in consciousness is characteristic of what type of seizure?
tonic/clonic
complex partial
absence
simple partial
91
If 1 of montages is poorly designed. Why is it poorly designed? Select one or more:
It does not follow a logical sequence
It is not arranged in an anterior to posterior fashion
Begins LT-RT then becomes RT over LT in Channels 14 & 15
None, they're all designed well according to ACNS Guidelines
92
Localize abn in sample by selecting all that apply in the answers below.
The spike is negative at F4
The origin of the spike is located between Fp2 and F8
The spike is negative at F8
The spike is negative at FP2
93
Describe the prominent feature of this sample.
phase reversal with phase cancellation
partial seizure
vertex sharp transient
electrode artifact
94
What are the four aspects of digital data collection which dictate signal reproduction quality?
Horizontal resolution, Vertical resolution, Sampling skew
Continuous voltage Δ, Digitized, Sampling Skew, & Filtering
Aliasing, Nyquist Principle, Critical SR, & A\D conversion
Critical SR, Horizontal Resolution, Dwell Time, and Aliasing
95
A system of assessing a patient's level of consciousness is called
glasgow coma scale
eye opening and closing
HIPAA
apgar score
96
78 yo pt w/HTN, smokes, awakens discover cannot speak or move rt side. Most likely diagnosis
non-convulsive epilepsy
migraine
stroke
multiple sclerosis
97
Persons entering field should have an associates degree & training from accredited END school
disqualifies registered techs who have been in the field
doesn't apply to credentialed technologists in field of END.
is a legal requirement
replaces the need for taking credentialing exams.
98
The suffix -"itis" means
inflammation
excision
tumor
incision
99
Using Nyquist Theorem, minimum sampling rate to clearly resolve a 70Hz waveform?
100
120
140
70
100
Since distances are double in ECI recordings, it isn't necessary to apply full set electrodes
false
true
101
If tech in field for long time, physician can allow technologist to read EEGs & dictate reports
true
false
102
Which filter would most effectively filter out slow waves resulting from sweat artifact?
LFF = 1 Hz
LFF = 5 Hz
HFF = 15 Hz
HFF = 70 Hz
103
Alpha rhythm is _____. (select all that apply)
normally reactive to eye opening
8-13 Hz
interspursed with POSTS during wakefulness
the dominant waking background rhythm
104
Sharp wave recorded periodically by scalp leads & confirmed by EKG monitoring channel
Glossokinetic potentials
Eye movements
EMG
PVC artifact
105
Glia means
bipolar
joyful
referential
glue
106
The ketogenic diet (select all that apply
challenging due to restrictive nature & burden of food prep
requires that the patient's food be weighed.
requires strict compliance.
has a fat to carb ratio of 4 to 1.
107
A simple partial seizure is
one with prolonged, complicated symptoms
initiated by loss of consciousness.
always produced by a focus in the temporal lobe
not associated with loss or change in consciousness
108
Which of the following is not a characteristic of REM sleep?
reduced EMG activity
saw tooth waves
K-complexes
low voltage mixed frequency EEG activity
109
How much of a .3 Hz wave will be seen if the .3 Hz LFF is on?
100 % of the amplitude
30 % of the amplitude
70 % of the amplitude
50 % of the amplitude
110
Uniform Determination of Death Act
irreversible cessation of all function of entire brain
irreversible cessation of circulatory & respiratory function
111
Otto Loewi _____.
identified acetylcholine as a neurotransmitter
first developed collodion electrode application method
developed the EEG electrode used in many labs today
first to record EEG in animals
112
According ACNS Guidelines 2006, minimum sampling rate, should be at least _ times HFF setting.
two
three or more
one
113
Which of the following describes the action of a capacitor?
converts alternating current to direct current
creates a direct current resistance
opposes changes in current flow
stores energy
114
How would you describe the sample?
REM
periodic epileptiform discharges
burst suppression
absence seizure
115
An olfactory aura is often
false sense of familiarity with the current situation
a smell.
a dream-like sense of strangeness.
accompanied by amnesia.
116
A sharp wave could have a duration of
20 msec
300 μV
160 msec
150 μV
117
Due to a central scalp lesion, C4 has to be relocated 4 mm anteriorly. The technologist should
relocate all RT parasagittal plane 4 mm anteriorly
relocate C3 4 mm anteriorly
make no other placement changes
relocate P3 4 mm anteriorly
118
When should the 60 Hz filter or "Notch" filter be used?
As last resort, after extensive efforts taken to eliminate
As first line of defence, engaged at all times.
When technologist is running behind schedule
Routinely, when doing a portable EEG at bedside.
119
Patients with _ have severe excess of urea in blood due to acute or chronic _.
encephalitis, alcoholism
uremia, renal failure
120
The resting membrane potential of a neuron is
+ 80 mV
+/- 180 mV
- 80 mV
- 180 mV
121
Cortical neurons communicate via
synapses
glial cells
digital instant messaging
the brainstem
122
All environmental noise recorded by EEG instruments is 60 Hz in frequency.
true
false
123
Each channel of the digital EEG instrument has
records the electrode of interest referenced to Cz
records one electrode compared to the ground
records 1 electrode compared to several other electrodes
records difference between 1 electrode & system reference
124
Hans Berger was the first to observe EEG changes in relation to what condition?
hypoglycemia
SSPE
hepatic encephalopathy
hyperthyroidism
125
The EEG response to hyperventilation would be considered abnormal when
the build up is of high amplitude up to 150 μV
the build up is frontally dominant
the build up consists of focal delta
the build up returns to baseline within 30 to 60 seconds
126
Slow waves of youth attenuate with
eye opening
eye closure
fist clenching of contralateral hand
clapping or other external sounds
127
Ability of the instrument to output voltage difference between 2 inputs to single channel is
Phase Reversal
Deflection
Cancellation
Differential Amplification
128
How is eye opening and closing an activation procedure? (select all that apply)
Eye opening causes attenuation of bkgd activity in occipital
Epileptiforms can be activated by eye opening & closing.
Eye closing ↑ amplitude of bkgd activity in occipital
Eye opening & closing brings out REM in Narcoleptic patients
129
What artifact is likely in the sample at Fp2?
Nystagmus
Prosthetic eye on the left
Lateral Rectus Spikes
Typical EOG
130
If suspected of being in status epilepticus, what might physician wish to do during the EEG?
Talk to pt's family in waiting room during the recording.
Start IV AEDs using the EEG to assure that status resolved
Continue to see patients in his clinic.
131
Midline theta rhythm is 5-7 Hz "spiky" waveform which & is found in what % of gen. population?
10%
25%
50%
< 1%
132
Generalized tonic/clonic seizures which continue for 30 minutes or more are
a medical emergency
treated by oral medications
characterized by 14 and 6 hertz positive spikes
characterized by a normal EEG
133
Which of the following EEG features would indicate a poor prognosis?
burst suppression
presence of sleep states
normal rhythms
reactivity to auditory stimuli
134
Which procedures are not within the scope of practice of Neurodiagnostictechnologists?
Phlebotomy and Radiology
Polysomnography and Nerve Conduction Studies
Electroretinography and electronystagmography
Electroencephalography and Evoked Potentials
135
Of extended duration; slow to develop
necrosis
pathological
chronic
acute
136
Voltage is:
Flow of electrons through a pathway; Unit = Ampere
Opposition to the flow of alternating current; Unit = Ohm
Potential charge difference between two points; Unit = Volt
Resistance of material to flow of direct current; Unit = Ohm
137
Which can be elicited by having the patient scan acomplex image?
Lambda
Alpha rhythm
POSTS
Posterior slow waves of youth
138
After a MVA, pt has ha, neck pain, dizziness, mood swings & insomnia. The most likely finding:
an epileptic focus in the temporal lobe
no abnormalities
the appearance of REM sleep within a minute of sleep onset
hydrocephalus on the CT
139
EEG labs should have dimmer switches, lighting adjusted for thepatient's comfort level.
true
false
140
Which of the following does not attenuate alpha rhythm?
drowsiness
active mental concentration
eye opening
eye closing
141
Sleep spindles are considered to be abnormal in the following conditions:
Spindle coma
During Stage II sleep
In a 36 year old patient
In a patient with TIAs
142
Sleep deprivation is helpful activating epileptiform activity because
stress & exhaustion activate abn's & ensure pt falls asleep.
after staying up drinking caffeine, pt wired & wide awake
more slow wave sleep is recorded after sleep deprivation
143
What stage of sleep is this and how do you know?
N1, SEMS
N2, Vertex waves and K-Complexes
REM, Rapid Eye Movements
N3, Diffuse slowing
144
The term "complex" in complex partial seizures indicates ______.
genetically determined
impairment of consciousness
associated with mental retardation
involving upper and lower extremity muscles
145
Left hemisphere found dominant for language in rt handed individuals, what % of the time?
85-90% of the time
approximately 90-95% of the time
approximately 50% of the time
approximately 75% of the time
146
If Grid 2 is more negative or less positive than Grid 1, the deflection will be ____ .
up
no deflection
down
147
Evaluation of a CNS disease that may have infectious etiology, the technologist should
not be concerned with any precautionary measures
request that electroencephalographer to perform the study
reschedule procedure until definite diagnosis has been made
observe the usual universal precautions
148
A person who is more electrically susceptible than the general population is
one who is post ictal
one who is young
one with some sort of conductor going into the heart
one who is on a ventilator
149
John Knott and Charles Henry were among the many investigators of
electromyography
transcranial doppler studies
spectral analysis of EEG
polysomnography
150
Most seizures are
caused by brain tumors.
caused by head injuries
due to drugs.
idiopathic.
151
A normal response to HV would include:
hypnagogic hypersynchrony
bitemporal spike and slow wave
3 per second spike and slow wave
a build up of slow activity
152
How much voltage would be recorded if 25 μV beta activity is recorded using a LFF of 1 Hz?
7.5 μV
17.5 μV
25 μV
1 μV
153
In LTM the electrode set up is
standard International 10-20 System of Electrode Placement
tailored to the patient
extended International 10-20 System of Electrode Placement
154
How does "Digital Bio Calibration" differ from traditional analog "Bio Cal"?
Records every recording electrode & system reverence
Digitization of the signal.
Bio Cal in digital & analog instruments are exactly same.
155
An artifact that has an appearance that is similar to a spike is
Bells Phenomenon
pacemeker artifact
Glossokinetic artifact
eye flutter
156
Used needles should be placed directly in
a glass bead sterilizer
a sharps container for disposal
disinfectant solution for cleaning and reuse
alcohol solution and wiped clean
157
According to ACNS Guidelines, requires monitors to have _ to accurately display EEG
25-35 mm/s horizontal scaling; maximum of 1000 datapoints/s
25-35 mm/s horizontal scaling; maximum of 100 datapoints/s
25-35 mm/s horizontal scaling; minimum of 100 data points/s
25-35 mm/s horizontal scaling; minimum of 1000 datapoints/s
158
Cleaning is the same thing as disinfecting and disinfecting is the same thing as sterilizing
false
true
159
Excruciating & irresistible need to move legs upon relaxing to sleep would indicate a diagnosis
CJD
restless leg syndrome
narcolepsy
sleep apnea
160
If you notice eye mvt artifacts in frontals & in P3 electrode, what is likely cause?
The P3 and P4 electrodes are switched.
The impedance is high at Fp1 and Fp2
Impedance high @ P3 causes shunting to ground @ Fpz
The patient has an prosthetic right eye.
161
Disadvantage of failure to discriminate artifacts when processing data for FFT?
May result in corruptions, misleading information.
The X-Y plot represents a specific frequency
Integrates voltage values of surrounding electrodes
The normative data is corrupt
162
No problems will be caused if an EEG recording is done during dialysis.
false
true
163
If 60 Hz interference reaches these 2 inputs of amplifiers, how much will be amplified?
1 microvolt
10 Volts
10 millivolts
10 nanovolts
164
Twitch RT face, electrode insures ↑ amplitude, w/out chance of in phase cancellation& w/out EKG
An electrode on right cheek and one on the left shoulder.
An electrode on the right cheek and one on the left hand.
Two electrodes placed 1 cm apart on the right cheek.
An electrode on right cheek and one on the right hand.

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