Normal and Abnormal EEG

FindingsJeffrey W. Britton, MD

Mayo Clinic, Dept of Neurology

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Normal and essentially normal EEG background

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EEG – Longitudinal Bipolar Montage

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EEG – Ipsilateral Ear Referential Montage

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Right eye covered

EEG benign variants

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Abnormal EEG

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FP1-F3

F3-C3

C3-P3

P3-O1

FP2-F4

F4-C4

C4-P4

P4-O2

50 V

1 sec

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Epileptiform discharges

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Ictal/Spell EEG Patterns

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Pre-Lorazepam Post-LorazepamAmerican Epilepsy Society 2015 E Slide 45

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