Our research is currently focused on questions in perceptual organization and perceptual learning, including interactions of immediately-available (perpetual) information and retained (memory) information. Our work emphasizes the combined application of behavioral and electroencephalographic (EEG) methods, using the methods of computational neuroscience to link these variables.
There are currently four major areas of emphasis in our lab:
Behavioral regularities and neural mechanisms of perceptual learning: This work is pursuing two broad goals. The first is to provide simultaneous behavioral and neurophysiological evidence capable of supporting or refuting hypotheses of multiple, simultaneously-available levels of coding in visual perceptual learning. The second is to develop computational, biophysically-constrained models of the networks that support the learning and expression of visual perceptual learning.
Theoretical and empirical characterizations of perceptual organization (configurality): Our lab, in partnership with Jim Townsend's lab at Indiana University, is pursuing a linked theoretical and empirical program aimed at developing and testing general, theoretically-grounded definitions of configurality, with a particular interest in facial perception and memory.
Effects of brain iron deficiency and repletion on perception, memory, and cognition: This is a second new line of work in the lab, in which we are documenting (using a combination of behavioral, EEG, and MRI measures) the extent to which iron deficiencies in women of reproductive age produce measurable, and correctable, changes in basic perceptual, mnemonic, and cognitive abilities.
Animal models for developing and evaluating computational algorithms for cortical source localization of EEG: The goal of this new line of work is to use the remarkable characteristics of the rat vibrissal system to develop allied statistical and empirical methods for comparing the performance of algorithms for EEG cortical source localization to a physical ground-truth.