Atlas of EEG Patterns

Organized by wave features rather than pattern names, this atlas helps guide the reader to an EEG interpretation even when the waveform is unfamiliar. The first section takes the reader through the process of characterizing EEG waves by their features. The second section organizes EEG patterns by their features, so provides EEG waveform differential diagnoses. The third section is organized alphabetically by pattern name with each pattern described in a way that allows the reader to distinguish it from similarly appearing patterns. Examples of the patterns also are provided.



Table Of Contents
Alpha activity
Occipital Alpha rhythm
Bancaud's phenomenon
Fast alpha variant
Slow alpha normal
Drowsiness
Slow alpha variant
Slow alpha abnormal
Central Mu rhythm
Temporal Wicket rhythm
Wicket fragment / spike
Generalized with coma
Artifacts
Cardiac
EKG
Pulse
Ballistocardiographic
Electrode
Electrode pop
Salt Bridge
Perspiration
Electrode/lead movement
EMG
Lateral rectus spike
Photomyogenic (photomyoclonic)
Glossokinetic (chew/swallow)
Scalp/facial muscle
EOG
Blink
Flutter
Lateral
REM
Slow / Roving
External
50/60 Hz ambient electrical noise
Electrical devices
Mechanical devices
Movement
Attenuation
Focal
Generalized
Beta activity
Central due to drowsiness
Generalized
Drowsiness
Medications
Coma
BETS (small sharp spikes)
BiPEDs
Breach effect
Burst suppression
Cone wave (O wave, occipital wave)
Delta activity
Generalized
Sleep
Medications
Abnormal slowing
Metabolic abnormality
Encephalopathy
Coma
Hypsarrhythmia
Focal
IRDA (projected slow waves, rythmes a distance)
FIRDA
OIRDA
Electrocerebral inactivity/silence
Brain death
Epileptiform discharge, focal
Spike w/ or w/o slow wave
Polyspike w/ or w/o slow wave
Sharp w/ or w/o slow wave
MISD
Rolandic spike (with dipole)
Epileptiform discharge, generalized
Spike and slow wave complex at <2.5/sec
Spike and slow wave complex at 3/sec
Spike and slow wave complex at >3.5/sec
Polyspikes
Secondary bilateral synchrony
Fourteen and Six Positive Bursts (ctenoids, 14 and 6 per second positive spikes)
Hypersynchrony
Hypnapompic and hypnagogic
Hyperventilation
Ictal pattern
Generalized
Partial
K complex
Lambda waves (Sail waves)
Occipital spikes of blindness
PFA
Focal
Generalized