An adult patient with drug-resistant epilepsy undergoes surgical evaluation with Stereoelectroencephalography (SEEG). The SEEG tracings (Figure A) with corresponding MRI image of intracranial electrode contact 6-8 (Figure B-D) are shown. Which of the following best describes this intracranial EEG finding?

• posterior dominant rhythm 
• wicket spikes 
• mu rhythm 
• rhythmic epileptiform discharges 
• focal seizure

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