EEG lessons

Seven short lessons that take you from where the signal comes from to critical care EEG. Free, no sign-up, every clinical statement sourced.

• 1. Foundations: signal, electrodes, montages, filtersWhere the signal comes from, the 10-20 system, how a montage changes what you see, and what filters can hide.
• 2. The normal EEG, awake and asleepPosterior dominant rhythm, beta, mu, lambda, drowsiness and the stages of sleep.
• 3. Artefacts: telling brain from everything elseEye, muscle, heart, electrode and environment. The questions that separate them from cerebral activity.
• 4. Epileptiform activity and seizuresWhat makes a discharge epileptiform, the syndrome signatures, activation procedures and the criteria for non-convulsive status.
• 5. Critical care EEGACNS terminology, periodic and rhythmic patterns, the ictal–interictal continuum, burst suppression and reactivity.
• 6. Focal lesions, coma, brain death and mimicsSlowing and what it localises, coma patterns, the technical standard for electrocerebral inactivity, functional seizures and benign variants.
• 7. Six casesSix bedside scenarios, each with its trace, the reading and the next step.