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Neuroscience Brown Bag Series

Thursday, March 14, 2019,

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  • Location: Wilson Hall • 111 21St Ave S • Nashville, TN 37240
  • Room: 316

Jacob Westerberg

Department of Psychology (Maier Lab)

Vanderbilt University

"Investigating pop-out visual search in the V4 laminar microcircuit and N2pc"

Area V4 has served as a window into the neural mechanisms of visual processing and attentional selection for several decades. However, pop-out visual search in this area has been largely ignored. Pop-out is particularly interesting in V4 as individual features alone, such as those V4 shows preferences for, represent the necessary information to perform the task correctly. In my ongoing work, I am investigating how V4 participates in target selection during pop-out visual search. While monkeys search for a color pop-out target among several distractors (red target among green distractors, or vice versa), a linear microelectrode array positioned across the layers, and orthogonally to the cortical sheet, records neural activity. Simultaneous EEG recordings are also performed to capture the ongoing electrical activity outside the brain. In this talk I will present preliminary data regarding target selection and attentional priming while also encouraging informal discussion.