Postdoctoral Researchers


Jessica Andrews-Hanna, Ph.D.

Jessica Andrews-Hanna is interested in using fMRI to investigate the neural mechanisms underlying top-down control of attention. How does the brain enhance or suppress attention to stimuli in the external environment? Do the same mechanisms facilitate enhancement and suppression of attention to internal representations (i.e. memories, daydreams)? By characterizing these mechanisms in healthy young adults, she hopes to examine how they change across the lifespan as well as in clinical populations. Contact Jessica. Personal Website


Joseph Orr, Ph.D.

Joe is interested in understanding the neural mechanisms underlying voluntary task selection. While we may think we have control over which task we choose at any given moment, there are a number of factors that influence our choices. He is particularly interested in how goal-directed control processes and stimulus-driven processes interact to guide our choices. Joe uses a multimodal approach (fMRI, ERP, DTI, VBM) to examine the interplay of these processes in the brain. He is also interested in examining how voluntary task selection is affected in disorders such as addiction and schizophrenia. Joe is supported by an NRSA fellowship from the National Institute on Drug Abuse. Contact Joe. Personal Website


Graduate Students


Alejandro de la Vega

Alejandro is a PhD student in Cognitive Neuroscience. He graduated from Pomona College in 2009 with a degree in Cognitive Science. He is interested in how the brain integrates complex information to make decisions; in particular, he is interested in how people make trade offs about the future (e.g. temporal discounting) and how those decisions are influences by social and episodic information. He is also interested in the functional organization of the brain and has developed neuroinformatic tools to mine large-scale neuroimaging data to this aim. Alejandro also developed a 3-part series on R, found on his website.
Contact Alejandro. Personal Website


Andrew Reineberg

Andrew Reineberg is a graduate student in cognitive neuroscience. He graduated from the University of Pittsburgh in 2009 with a Bachelor of Philosophy in Neuroscience and Psychology. He is interested in the interplay between internal spontaneous thought (i.e. - mind wandering) and executive function. Specifically, he wants to further our understanding of the neural processes mediating the content, occurrence, and awareness of mind wandering. Contact Andrew


Harry Smolker


Professional Research Assistants


Kathy Pearson

Kathy Pearson received her M.S. in Computer and Information Sciences from the University of Alabama in Birmingham. She is a software developer with a background in neurophysiology and fMRI. Her interests are in signal processing and scientific visualization.


Sharoda Worby-Selim

Sharoda Worby-Selim received her B.S. in Psychology from Haverford College and completed her thesis on the relationship between cognitive control and emotion suppression. She hopes to further research executive functions and emotion regulation using EEG and fMRI.



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Deanna Griesan

Deanna Griesan is a junior at University of Colorado-Boulder pursuing a degree in Integrative Physiology with a certificate in Neuroscience. She hopes to become a pediatrician, with some emphasis in neurology. She enjoys studying all aspects of the brain, combining her love of anatomy, physiology, and neuroscience. She is specifically interested in traumatic brain injuries in hopes that our society can enhance our knowledge to improve options for treatment. Outside of the lab, she enjoys spending time with friends, dance, movies, and board games.



Past Postdoctoral Researchers

Past PhD. Students

Past Undergraduates