Education & training
EEG feature gallery
Annotated example pages of normal backgrounds, sleep, normal variants, artifacts, epileptiform patterns, seizures, ACNS critical-care terminology, neonatal records and qEEG trends. Open a page to read it at full size, at one image pixel per screen pixel, or at true 30 mm/s paper speed.
Synthetic teaching examples, not patient EEGs. Every image is computer-generated to illustrate one feature; none comes from a patient recording. Definitions and criteria are in the EEG and qEEG reference.
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Background
9 examplesNormal backgrounds
Awake background by age
Reactivity
Activation
Background
10 examplesSleep
Drowsiness and N1
N2
N3
REM
Arousal
Background
11 examplesNormal variants
Awake variants
Drowsiness and sleep variants
Adult variants
Background
16 examplesArtifacts
Ocular
Muscle and tongue
Electrode and environment
Cardiac
Movement and care
Devices
Pathology
13 examplesAbnormal non-epileptiform
Focal and lateralized
Generalized
Voltage and continuity
Coma and encephalopathy patterns
Temperature
Pathology
13 examplesInterictal epileptiform
Temporal
Frontal
Central
Central / rolandic
Occipital
Multifocal
Brief rhythmic discharges
Pathology
13 examplesFocal seizures
Temporal
Evolution
Frontal
Central
Occipital
Parietal
Postictal
Status epilepticus
Seizure cluster
Infantile spasms
Tonic
Pathology
19 examplesGeneralized epilepsies
Absence seizures
Myoclonic family
Tonic and atonic
Generalized tonic-clonic
Reflex seizures
Interictal generalized
Epileptic encephalopathy
Pathology
20 examplesACNS critical care
Periodic discharges
Plus modifiers
Sharpness
Rhythmic delta activity
Special patterns
Stimulus-induced patterns
Ictal-interictal continuum and seizures
Special populations and trends
16 examplesNeonatal
Background by PMA
Sleep
Abnormal background
Graphoelements
Seizures
Hypothermia
Special populations and trends
9 examplesSedation
Anesthetic agents
Barbiturate coma
Neuromuscular blockade
Special populations and trends
12 examples