| Human visual attention, working memory, and learning | Human visual attention, working memory, and learning | We study visual selective attention using tasks such as visual search. We are interested in how visual attention is interdependent on visual working memory (short-term visual memory stores), as well as how long-term learning shapes visual attention. For instance, how do the contents of visual working memory affect attention (Beck & Vickery, 2019, 2020)? We employ behavioral experiments and fMRI neuroimaging to study these phenomena. | Vickery, Timothy;Baker, Lynn;Levy, Alyssa | tvickery;abaker;alevalt | | <img alt="" src="/content-sub-site/PublishingImages/human-visual-attention.jpg" style="BORDER:0px solid;" /> | | | | | |
| Human Visual Perceptual Organization | Human Visual Perceptual Organization | We study an important set of phenomena that fall under the umbrella of “perceptual organization,” such as perceptual grouping effects first studied by the Gestalt psychologists. These phenomena reflect mid-level human vision processes that set the stage for visual understanding, recognition, and visuomotor integration. Recently, we have begun investigating individual differences in these phenomena, searching for clues as to which ones share underlying mechanisms. We study this with human psychophysical experiments that measure the effects of different kinds of grouping and segmentation. | Vickery, Timothy;Lebed, Anton | tvickery;alebed | | <img alt="" src="/content-sub-site/PublishingImages/Human-Visual-Perceptual-Organization.jpg" style="BORDER:0px solid;" /> | | | | | |
| Object‐based warping | Object‐based warping | Objects seem to distort the perception of spatial relationships (Vickery & Chun, 2010). Current psychophysical and neuroimaging research in the Vickery lab seeks to map and better understand how and when this distortion occurs, when it leads to expansion vs. compression of perception, how this illusion relates to brain activity (measured with fMRI), and why it might arise from the way that objects are represented in visual cortex. | Vickery, Timothy;Lebed, Anton | tvickery;alebed | | <img alt="" src="/content-sub-site/PublishingImages/object‐based-warping.jpg" style="BORDER:0px solid;" /> | | | | | |
| Visual Statistical Learning | Visual Statistical Learning | Humans rapidly learn statistical associations among visual stimuli, even when they are not aware of such contingencies and are not trying to learn those associations. This is called visual statistical learning, and it may play an important role in such tasks as navigation and categorization, or even in basic perceptual organization. In the Perception and Learning lab, we use behavior and fMRI neuroimaging to study numerous aspects of this phenomenon: when, how, and why it occurs, and what are the consequences? | Vickery, Timothy;Rogers, Leeland;Levy, Alyssa | tvickery;lrogers;alevalt | | <img alt="" src="/content-sub-site/PublishingImages/Vickery%20lab%20picture.jpg" style="BORDER:0px solid;" /> | | | | | |
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