Free R.EEG.T. Cheat Sheet 2026: Azure Fundamentals Quick Reference

Pre-Study

15%of exam

History 10-20 SafetyImpedanceSetup Picker

Perform EEG Study

46%of exam

MontagesFiltersActivation Artifacts Artifact Picker

Post-Study

19%of exam

Waveforms Sleep Localization Analysis PickerNormal vs Variant

Ethics + Professional

20%of exam

DocumentationCritical EventsHIPAAScopeEthics Picker

Quick Facts

Exam: R.EEG.T.
Owner: ABRET
Time: 4 hours
Format: Multiple choice
Vendor: Prometric
Credential: 5 years
Record minimum: 20 minutes
Pass: Criterion cut score

10-20 Sides

Odd left, even right, Z midline.

Odd = leftEven = rightZ = midline

Setup Picker

Need center mark→Cz(Two midlines)
Need hemisphere→Odd/even(Left/right)
Impedance low→Check bridge(Possible short)
Impedance unbalanced→Reprep skin(Reduce noise)
Allergy risk→Alternate supplies(Document sensitivity)
Contraindication present→Skip activation(Document reason)

History

Patient ID: Two identifiers
Reason: Clinical indication
Medications: Sedating or activating
Last seizure: Event timing
Sleep loss: Activation context
Last meal: Physiologic context
Prior EEG: Comparison data
Contraindications: Activation safety

10-20

Nasion: Anterior landmark
Inion: Posterior landmark
Preauricular: Lateral landmarks
Cz: Midline intersection
Odd numbers: Left hemisphere
Even numbers: Right hemisphere
Z: Midline electrode
T3/T4: T7/T8 legacy

Electrodes + Impedance

Ag/AgCl: Low-noise electrode
Gold disk: Routine option
Needles: Avoid routine
Ground: Isolated safety
System reference: Manufacturer placement
Impedance: Check prerecording
Balanced: Noise rejection
Under 100 ohms: Possible short

Safety

CPR/BLS: Eligibility requirement
Infection control: Disinfect electrodes
Allergies: Collodion sensitivity
Electrical safety: No earth ground
Consent: Risky procedures
HIPAA: Protect information
SDS/OSHA: Chemical safety
Patient rights: Dignity first

Filter Guard

Low hides delta; high hides spikes.

LFF protects slowHFF protects fastNotch last

Referential vs Bipolar

Referential

Common reference
Amplitude comparison

Bipolar

Adjacent electrodes
Phase reversal

Reference compares; bipolar localizes

Recording Picker

Localize spike→Bipolar montage(Phase reversal)
Compare amplitudes→Referential montage(Common reference)
Need standard view→Longitudinal bipolar(Chain review)
Suspect temporal focus→Extra electrodes(Better sampling)
Electrical noise→Fix source(Before notch)
Slow artifact→Annotate filters(Avoid overfiltering)

Montages

Referential: Common reference
Bipolar: Adjacent pairs
Longitudinal: Anterior-posterior chains
Transverse: Left-right chains
Average reference: Calculated reference
Laplacian: Local source emphasis
Phase reversal: Field maximum
Reformatting: Digital advantage

Artifact Proof

Eyes, muscle, heart, electrode, power.

EyesEMGECGLead60 Hz

LFF vs HFF

LFF

Controls slow activity
Preserve delta

HFF

Controls fast activity
Preserve spikes

Filters can erase pathology

Artifact Picker

Frontal slow waves→Check eyes(Blink/movement)
Fast muscle bursts→Relax jaw(EMG)
Regular heart timing→ECG channel(Cardiac artifact)
Abrupt single lead→Check electrode(Pop)
Exact 60 Hz→Check power(Mains noise)
Slow baseline drift→Cool patient(Sweat)

Filters + Sensitivity

Sensitivity: 5-10 uV/mm
Initial gain: 7 uV/mm
LFF: No higher than 1 Hz
Time constant: At least 0.16 sec
HFF: At least 70 Hz
Notch: Last resort
Calibration: Before recording
Epoch display: 10-20 sec/page

Photic vs HV

Photic

Photosensitivity screen
Before HV

HV

Absence activation
Three minutes

Check contraindications first

Activation

Eyes open: Alpha attenuation
Eyes closed: Alpha emergence
Photic: Photosensitivity screen
Lamp distance: At least 30 cm
Dim room: Photic condition
HV: Overbreathing activation
HV duration: Minimum 3 minutes
Post-HV: Record 1 minute

Artifact vs Cerebral

Artifact

Matches source
Fixable pattern

Cerebral

Physiologic field
Clinical correlation

Prove source before labeling

Artifacts

Eye blink: Frontal slow deflection
Eye movement: Opposing frontal fields
EMG: Fast irregular activity
ECG: Cardiac timing
Pulse: Electrode movement
Sweat: Slow baseline drift
Electrode pop: Abrupt single lead
60 Hz: Electrical interference

Events + Troubleshooting

Clinical event: Annotate immediately
Technologist note: Observed behavior
Video: Artifact/event context
ECG channel: Pulse/spike check
Loose lead: Check impedance
All-channel noise: Ground or power
One-channel noise: Electrode problem
Coma stimuli: Document responses

N2 Markers

Spindles and K complexes mark N2.

SpindleK complexN2 sleep

Spike vs Sharp

Spike

20-70 msec
Sharper transient

Sharp wave

70-200 msec
Longer transient

Duration decides name

Analysis Picker

Adult eyes closed→PDR(8-13 Hz)
Central arch rhythm→Mu(Blocks movement)
N2 sleep marker→Spindle/K(Stage sleep)
Sharp transient→Measure duration(Spike vs sharp)
Bipolar reversal→Find maximum(Localize field)
Clinical event→Correlate video(EEG change)

Waveforms

Delta: Under 4 Hz
Theta: 4-7 Hz
Alpha: 8-13 Hz
Beta: Over 13 Hz
PDR: Posterior alpha rhythm
Mu: Central arch rhythm
Spike: 20-70 msec
Sharp wave: 70-200 msec

Alpha vs Mu

Alpha

Posterior dominant
Blocks eye opening

Mu

Central arch
Blocks movement

Location plus blocker

Sleep

Drowsiness: Alpha dropout
Vertex wave: N1 marker
Spindle: N2 marker
K complex: N2 marker
Slow wave: N3 marker
REM: Low-voltage mixed
Sleep deprivation: Spike yield
Seizure history: Sleep useful

Localization

Frequency: Cycles per second
Voltage: Amplitude measure
Duration: Wave interval
Polarity: Negative or positive
Field: Spatial distribution
Maximum: Largest voltage
Phase reversal: Bipolar localization
Clinical correlation: History plus EEG

Scope Line

Record facts; physicians diagnose.

AnnotateNotifyDo not diagnose

Document vs Interpret

Document

Observed facts
Technologist duty

Interpret

Clinical diagnosis
Physician duty

Stay inside scope

Ethics Picker

Seizure occurs→Notify physician(Critical result)
Patient data→Protect privacy(HIPAA)
Asked diagnosis→Defer interpretation(Scope limit)
Unexpected event→Document facts(No guessing)
Testing issue→Report truthfully(ABRET ethics)
Unsafe situation→Prioritize patient(Dignity/safety)

Reports + Ethics

Documentation: Clear permanent record
Consciousness: State changes noted
Commands: Mark on record
Critical result: Notify physician
Interpretation: Physician responsibility
Confidentiality: Patient information protected
Code ethics: ABRET conduct
IP rights: Respect ABRET materials

Common Traps

Estimated Placement

Measured 10-20 ≠ Estimated electrode map

Notch Filter

Fix interference first ≠ Mask with notch first

Low Impedance

Possible short ≠ Always excellent contact

Phase Reversal

Voltage maximum ≠ Artifact proof

Hyperventilation

Contraindications matter ≠ Routine for everyone

Alpha Rhythm

Posterior eyes closed ≠ Central movement rhythm

Scope

Describe observations ≠ Provide diagnosis

Last Minute

1.2026 weights: 15/46/19/20
2.Routine EEG: 20 minutes minimum
3.Cz = two midlines intersect
4.Odd left; even right
5.Impedances balanced, not bridged
6.LFF <= 1 Hz
7.HFF >= 70 Hz
8.Notch only after troubleshooting
9.HV minimum 3 minutes
10.Photic before HV
11.Bipolar shows phase reversal
12.Document; do not diagnose

ABRET R.EEG.T Registered EEG Technologist

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