Representation of the McCollough Effect in Early Visual Cortex
Dr. Katherine Tregillus
Postdoctoral Researcher, Vision & Imaging Lab
University of Minnesota
The McCollough Effect is a visual illusion produced by viewing colored, oriented patterns resulting in orientation-contingent color afterimages that can endure for weeks or months. Despite the large amount of work done on the McCollough Effect, the neural loci and mechanisms producing it remain under debate. Using an altered-reality paradigm to produce an especially large McCollough Effect, we measured the induced aftereffect with fMRI. Preliminary results indicate that patterns of neural activity in early visual cortex reflect the presence of the illusory colors.
Dr. Katherine Tregillus received her PhD in Psychology, Cognitive and Brain Sciences from the University of Reno, Nevada, advised by Dr. Michael Webster. She is currently a Postdoctoral Researcher in the Vision & Imaging Lab at the University of Minnesota, working with Dr. Stephen A. Engel.
When and Where
11:00 AM-12:00 PM
Munsell Color Science Laboratory
Open to the Public