Visual attention, emotion-cognition interactions, response interference effects, and individual differences.
My research focuses on visual attention and emotion-cognition interactions. I am also interested in individual differences, specifically, in individuals who vary in terms of their personality and emotional temperament (normal, at-risk for depression, at-risk for mania, at-risk for phobia). I use a variety of methodologies and approaches: behavioral psychophysics, eye-tracking, computational modeling, electrodermal activity measurements, and visual perimetry. Some of my recent work focuses on how cognitive load and task difficulty impact visual distractibility and visual sensitivity. In our lab, we are also studying visual search with a particular focus on parallel vision. Our approach combines computational simulations, behavioral psychophysics, and eye- tracking to study the temporal dynamics of early visual processing. Using this approach, we try to predict performance in complex scenes based on performance observed in simpler contexts. Finally, I am also interested in the effects of perceived control (real and illusory) on emotion processing and attentional control.
- PhD. from the University of Geneva (Switzerland)
Awards and Honors
Awarded a 2019 research grant from the National Science Foundation (Behavioral and Cognitive Science Division, award number: 1921735). Role: PI. Title: CompCog: Template Contrast and Saliency (TCAS) Toolbox: a tool to visualize parallel attentive evaluation of scenes.
Awarded a 2016 research grant from the BRIDGE Birmingham-Illinois partnership initiative.
Psyc230 Perception and Sensory Processes (face-to-face: Fall and Spring; Online: Winter and Summer)
Psyc396 The Attentive Mind
Global Eduction and Training (GET) in the context of the Engeneering Research Summer School
Buetti, S., Xu, J., & Lleras, A. (2019). Predicting how color and shape combine in the human visual system to direct attention. Nature Scientific Reports, 9, 20258, doi:10.1038/s41598-019-56238-9
Ng, G.J.P., Buetti, S., Dolcos, S., Dolcos, F., & Lleras, A. (2019). Distractor rejection in parallel search tasks takes time but does not benefit from context repetition. Visual Cognition, 27(5-8),609-625. https://doi.org/10.1080/13506285.2019.1676353
Lleras, A., Wang, Z., Madison, A., & Buetti, S. (2019). Predicting Search Performance in Heterogeneous Scenes: Quantifying the Impact of Homogeneity Effects in Efficient Search. Collabra: Psychology, 5(1), 2. DOI: http://doi.org/10.1525/collabra.151
Wang, Z., Buetti, S., & Lleras, A. (2017). Predicting Search Performance in Heterogeneous Visual Search Scenes with Real-World Objects. Collabra: Psychology, 3(1), 6. DOI: http://doi.org/10.1525/collabra.53
Zhou, L.-F., Buetti, S., Lu, S., & Cai, Y.-C. (2017). Attentional Effect on Contrast Appearance: From Enhancement to Attenuation. Journal of Experimental Psychology: Human Perception and Performance, 44(5), 806-817. DOI: http://dx.doi.org/10.1037/xhp0000499
Buetti, S., & Kerzel, D. (2009). Conflicts during response selection affect response programming: Reactions towards the source of stimulation. Journal of Experimental Psychology: Human Perception and Performance, 35(3), 816-834.