Education Credit

3.0 CME

Nurses may claim up to 3.0 contact hours for this session.

University of Minnesota approves this knowledge-based activity for 3.0 contact hours (0.3 CEUs). UAN XXXX-XXXX-19-XXX-LXX-P. Initial Release Date: 12/6/19.

Epilepsy Specialist Symposium: Interictal Epileptiform Activity and Its Meaning

Convention Center, Ballroom III
8:30 AM-11:30 AM
Behavioral Health Providers

This symposium appraises the meaning of interictal activity. It examines whether interictal epileptiform discharges (IED) are predictive of seizures and whether IED can be used to determine the seizure onset zone or predict outcome after epilepsy surgery. It will also inform about the interaction of IED and cognition.

Learning Objectives

Following participation in this activity, participants will be able to:



  • Differentiate whether interictal EEG activity is pro or anticonvulsive
  • Recognize the value of interictal activity for localizing the seizure onset zone
  • Review the interaction between IED and cognition and attention
  • Discuss the spatial variation and distribution of interictal discharges
  • Comprehend clinical decision making based on interictal discharges



Chairs: Barbara Jobst, MD, PhD and Greg Worrell, MD, PhD

Introduction and Case Presentation, Barbara Jobst, MD, PhD
Can Interictal Spikes Predict Seizures?
Do IEDs Promote Seizures? Philippa Karoly, PhD
Rhythms of Interictal Epileptiform Activity, David Spencer, MD
Can IED Predict Seizure Focus or Surgical Outcome?
Does the Spatial Distribution or Frequency of IED Predict Seizure Onset Zone? Erin Conrad, MD
Should Ictal or Interictal Activity Guide Surgical Resection? Jean Gotman, PhD
The Latest Science About Interictal Activity: Excerpts from Poster Presentations
Interictal Epileptiform Activity and Cognition?
Interictal Activity Impairs Cognition, Jon Kleen, MD, PhD
Should Patients with Frequent Interictal Discharges be Driving? Dorothee Kasteleijn-Nolst Trenite, MD, MPH
The Latest Science About Interictal Activity: Excerpts from Poster Presentations
What is an Interictal and What is Ictal Epileptiform Activity?
The Ictal-Interictal Continuum, Susan Herman, MD
Questions and Conclusions, Gregory Worrell, MD, PhD