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James W. Pennebaker, Chair The University of Texas at Austin, SEA 4.212, Austin, TX 78712 • (512) 475-7596

Jarrod A Lewis-Peacock

Assistant Professor Ph.D., University of Wisconsin-Madison

Jarrod A Lewis-Peacock

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Biography

Jarrod Lewis-Peacock received his Ph.D. in Psychology from the University of Wisconsin - Madison in 2010, and was a postdoctoral fellow in the Department of Psychology and the Neuroscience Institute at Princeton University before coming to the University of Texas at Austin in 2013. He is interested in understanding how human memory works. Our memory system is always “on”, recording the moment to moment experiences of our lives. Why then can we only access some of the information from our vast repository of memories while other information appears to have gotten lost in the shuffle? Also, how is it that we can focus our attention, for brief periods of time, on small bits of information in memory in order to guide our behavior? Research in the Lewis-Peacock lab currently focuses on understanding how the processes of working memory and long-term memory interact with one another, and on how people dynamically deploy these resources in the service of pursuing their goals. We are especially interested in how memory interacts with other high-level cognitive functions such as perception, attention, learning, and decision making. To address these questions, we use a combination of behavioral methods, functional neuroimaging, and computational approaches. The recent melding of machine learning techniques with functional magnetic resonance imaging (fMRI) has enabled us to “peek under the hood” and test psychological theories in powerful new ways. For example, we are using analyses of brain activation patterns (“brain decoding”) in fMRI to reveal, on a moment-to-moment basis, what a person is seeing, holding in mind, remembering, and even forgetting. We plan to expand this approach by incorporating real-time neurofeedback into our experiments (i.e., reading a person’s thoughts back to them during an experiment) to expand their awareness, and our understanding, of how cognitive resources are being deployed in different situations.

Representative Publications

LaRocque, J.J., Lewis-Peacock, J.A., Drysdale, A.T., Oberauer, K., & Postle, B.R. (2013). Decoding attended information in short-term memory: An EEG study. Journal of Cognitive Neuroscience, 25(1): 127-142.

Lewis-Peacock, J.A. & Postle, B.R. (2012). Decoding the internal focus of attention. Neuropsychologia, 50(4): 470-478.

Lewis-Peacock, J.A., Drysdale, A.T., Oberauer, K., & Postle, B.R. (2012). Neural evidence for a distinction between short-term memory and the focus of attention. Journal of Cognitive Neuroscience, 24(1): 61-79.

Johnson, J.S., Sutterer, D.W., Acheson, D. J., Lewis-Peacock, J.A., & Postle, B.R. (2011). Increased alpha-band power during the retention of shapes and shape-location associations in visual short-term memory. Frontiers in Perception Science, 2(128): 1-9.

Lewis-Peacock, J.A. & Postle, B.R. (2008). Temporary activation of long-term memory supports working memory. Journal of Neuroscience, 28(35), 8765-8771.

Interests

Interactions between memory, attention, and learning; neural decoding & neurofeedback

PSY 394U • Fmri Brain Decoding

44315 • Spring 2014
Meets TTH 1100am-1230pm SEA 1.332
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Seminars in Cognitive or Perceptual Systems. Three lecture hours a week for one semester. May be repeated for credit when the topics vary. Prerequisite: Graduate standing and consent of instructor.

PSY 418 • Statistics And Research Design

43665-43670 • Fall 2013
Meets MWF 1200pm-100pm NOA 1.116
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Students may not enroll in Psychology 418 more than twice. Survey of statistics, including central tendency, variability and inference, and scientific methodology used in psychological research. Three lecture hours and two discussion hours a week for one semester. Prerequisite: Psychology 301 with a grade of at least C and credit for one of the following: Mathematics 302, 303D, 403K, 305G, 408C, 408K, 316; or Statistics and Scientific Computation 302, 303, 304, 305, 306, 318.

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