Drexel University - Comprehensive, integrated academics enhanced by co-operative education, technology, and research opportunities. | Drexel University
Drexel University
Search events. View events.

All Categories

Click for help in using calendar displays. Print the contents of the current screen.
Display Format: 
Event Details
Notify me if this event changes.Add this event to my personal calendar.
Go Back
Traveling Waves in the Human Brain
Start Date: 5/12/2017Start Time: 2:00 PM
End Date: 5/12/2017End Time: 4:00 PM

Event Description
BIOMED PhD Thesis Defense

Traveling Waves in the Human Brain

Honghui Zhang, PhD Candidate, School of Biomedical Engineering, Science and Health Systems

Joshua Jacobs, PhD, Assistant Professor of Biomedical Engineering, Columbia University

Brain oscillations are thought to be important for coordinating neural activities across different scales and regions. In my dissertation, I developed a novel analytical approach to test this hypothesis by probing spatial patterns of brain oscillations and comparing if they behave as traveling waves. I applied this method to human intracranial brain recordings collected from 97 surgical implanted patients. The results showed that, in both hippocampus and neocortex, low frequency oscillations are spatially clustered and form traveling waves. Traveling brain waves propagate through particular anatomical axes in different parts of the brain: in a posterior-to-anterior direction in both the hippocampus and the neocortex.

By examining the relation between the traveling brain waves' oscillatory frequency and propagation speed, my analyses help explain the mechanism underlying traveling waves, by showing that this phenomenon can be modeled as weakly coupled oscillators. traveling waves also exhibited behavior modulations, as the directional precision of waves in the frontal lobe correlated with cognitive efficiency in a working memory task.

By showing the prevalence, mechanism, and behavioral role of traveling waves, my study presents a new window for understanding the organization and function of brain oscillations, which is to propagate behavioral information through a large anatomical space.
Contact Information:
Name: Ken Barbee
Phone: 215-895-1335
Email: barbee@drexel.edu
Biomed logo
Papadakis Integrated Sciences Building (PISB), Room 104, located on the northeast corner of 33rd and Chestnut Streets.
  • Undergraduate Students
  • Graduate Students
  • Faculty
  • Staff

  • Display Month:

    Advanced Search (New Search)
    Date Range:
    Time Range:

    Special Features: 

    Select item(s) to Search

    Select item(s) to Search
    Select item(s) to Search
    Select item(s) to Search