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Ian C. Fiebelkorn, Ph.D.

Contact Information

Research Labs

Faculty Appointments



The overarching goal of the Fiebelkorn lab’s research is to understand how the brain flexibly allocates its limited processing resources to improve behavioral outcomes. Addressing this goal requires observing neural dynamics on multiple scales—at the levels of single neurons, local neural populations, and large-scale networks.

Research questions: How does the brain navigate our complex environments? In a busy street scene, for example, the brain relies on filtering mechanisms. Two primary functions interact to make this filtering possible: (1) spatial attention (enhanced or suppressed sensory processing) and saccades (exploratory shifts of gaze). A shared network of brain regions, known as the “attention network,” directs both. But how?

Key findings and new investigations: We recently demonstrated that these sensory and motor functions alternate over time (approximately every 250 ms). We continue to investigate the temporal dynamics of attention-related functions. This work covers the balance not only between sensory and motor functions, but also between enhancement (of behaviorally relevant information) and suppression (of distracting information). We are further investigating whether such temporal or rhythmic coordination is a more general mechanism in the brain for resolving potential functional conflicts, maintaining cognitive and representation flexibility.

Clinical applications: We hope that our research will provide a new lens through which to investigate and treat brain disorders marked by abnormalities in cognitive flexibility, such as attention-deficit hyperactivity disorder (ADHD) and obsessive-compulsive disorder (OCD).



BA | Hamilton College

PhD | City University of NY, City College

Post-doctoral Training & Residency

2016 - 2020
Associate Research Scholar, Princeton Neuroscience Institute, Princeton University, Princeton, NJ Advisor: Dr. Sabine Kastner

2012 - 2015
Postdoctoral Fellow, Princeton Neuroscience Institute, Princeton University, Princeton, NJ Advisor: Dr. Sabine Kastner

2011 - 2012
Postdoctoral Fellow, Departments of Neuroscience and Pediatrics, Albert Einstein College of Medicine, Bronx, NY and Center for Visual and Cognitive Neuroscience, North Dakota State University, Fargo, ND Advisors: Dr. John J. Foxe, Dr. Mark E. McCourt

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CUNY Research Grant for Doctoral Students

2006 - 2011
CUNY Graduate Center Science Fellowship

RTI International Highly Published Author and Outstanding Paper Awards

2003 - 2004
RTI International Annual Awards for Outstanding Contributions to Strategic Goals

Senior Prize in Neuroscience, Hamilton College

New York Science Education Program Summer Research Grant, Hamilton College

1997 - 2001
Dixon-Comstock Scholarship, Hamilton College

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Journal Articles

Fiebelkorn IC, Kastner S. "Spike Timing in the Attention Network Predicts Behavioral Outcome Prior to Target Selection." Neuron.. 2020 Oct 20; Epub 2020 Oct 20.

Kastner S, Fiebelkorn IC, Eradath MK. "Dynamic pulvino-cortical interactions in the primate attention network." Current opinion in neurobiology.. 2020 Sep 14; 65:10-19. Epub 2020 Sep 14.

Fiebelkorn IC, Kastner S. "Functional Specialization in the Attention Network." Annual review of psychology.. 2020 Jan 4; 71:221-249. Epub 2019 Sep 12.

Books & Chapters

Chapter Title: Attention and Multisensory Feature Integration
Book Title: The New Handbook of Multisensory Processing (Second Edition)
Author List: Fiebelkorn IC, Foxe JJ, Molholm S
Published By: MIT Press 2012