Principal Investigator

Dobromir (Doby) Rahnev, Ph.D.

CV

E-mail: rahnev@psych.gatech.edu



Research Interests: Perceptual decision making, prefrontal cortex, metacognition, computational models of cognition

About me: I enjoy soccer, hiking, juggling, and math puzzles.


Postdocs

Johan Nakuci

CV

E-mail: jnakuci@gmail.com



Research Interests: I am interested in understanding how brain networks facilitate cognition.

About me: I like hiking and most things that involve the outdoors.


Marshall Green

CV

E-mail: marshall.l.green@outlook.com



Research Interests: I am interested in perceptual decision-making and metacognition. To study these topics, I combine psychophysics and computational modeling to test and develop theories of perception. My recent work has been focused on motion and orientation perception, summary statistics, and visual confidence.

About me: I earned my Ph.D. in Cognitive Science from Mississippi State University where I researched visual perception and visual working memory. I am married to a wonderful woman named Jenn, who is a talented graphic designer. My hobbies include playing violin, cooking, photography, and hiking.


Yi Gao

CV

E-mail: yi.gao0525@outlook.com



Research Interests: I am interested in understanding human visual perception, including various visual effects such as adaptation, perceptual learning and ensemble coding. I am also interested in how other sensory modalities interact with vision.

About me: I like playing Werewolf games and Catan. I also love watching professional gamers playing PUBG Esports.


Graduate Students

Sean Zheng

CV

E-mail: seann0820@gmail.com



Research Interests: I am interested in how people become aware of themselves and the external environment. I am also interested in how people metacognitively monitor and control their own decision-making processes. I would like to use behavioural experiments, multimodal neuroimaging methods and computational models to answer these questions of interests.

About me: I love coffee, reading, Lego, stand-up comedy, Peanuts (comic), Japanese TV dramas, and Arsenal football club.


Samuel Goldstein

CV

E-mail: sgoldstein41@gatech.edu



Research Interests: I am interested in understanding abnormalities in functional organization and neural circuitry in psychiatric disorders and how fMRI + TMS Neurofeedback can modify neural circuitry.

About me: I like to freestyle dance, design fashion (Check out: fop-shop.com), whitewater kayak, and go on spontaneous adventures!


Nadia Haddara

CV

E-mail: nadiahaddara@gatech.edu



Research Interests: I am interested in the neural mechanisms underlying emotion-cognition interactions, specifically the influence of fear and threat-predictive environmental cues on how we perceive, attend to, and learn about meaningful associations. My current projects use functional neuroimaging (fMRI) to examine the impact of threat-related information on perceptual decision-making in the brain using a Pavlovian conditioning paradigm. I also have an interest in factors that modulate people’s basic visual perception and metacognition (i.e. the ability to reflect on and evaluate one’s behavior).

About me: I am an avid horseback rider who also enjoys running, reading any neuroscience book or fantasy trilogy I can get my hands on, and playing board games or just spending time with family and friends.


Farshad Rafiei

CV

E-mail: farshad@gatech.edu



Research Interests: I’m interested in using neuroimaging techniques to understand attention, learning, and decision making in the human brain. Investigating any aspect of the brain -- the most mysterious and exceptional organ in our body, which is the source of our memory, perception, creativity, and thinking -- is fascinating for me. One of my goals is helping people with behavioral and mental abnormalities. My research focuses on using simultaneous TMS-fMRI to understand the function of neural networks in the brain.

About me: I love playing soccer, playing games and watching movies. I also like poems and my favorite poet is Hafez.


Lab Manager

Kai Xue

CV

E-mail: kxue33@gatech.edu



Research Interests: I am interested in how visual system is able to perceive information and make decisions. I want to integrate computational modeling, neuroimaging techniques, and behavioral experimentation to understand how visual system understands and reasons actions.

About me: I play the piano and the flute. For sports, I play table tennis.


Lab Alumni

  Ji Won Bang - Former postdoc, now a postdoc at New York University.

  Jiwon Yeon - Former Ph.D. student, now a postdoc at Stanford University.

  Medha Shekhar - Former Ph.D. student, now a postdoc at University College London.