SEPTEMBER 26, 2019
Publication update: Hyojeong’s paper accepted in Journal of Cognitive Neuroscience and Remy’s paper in Cortex
The lab has been extra busy lately working on publications over projects that are finishing up in the lab. Hyojeong and Jarrod’s paper entitled “Predictability changes what we remember in familiar temporal contexts” is in press in the Journal of Cognitive Neuroscience. In this work, they demonstrated that how associative memories are updated is influenced by the reliability of abstract-level predictions in familiar contexts.
Remy and Jarrod’s “Working memory prioritization impacts neural recovery from distraction” is in press at Cortex. Their work shows working memory is susceptible to distraction, and how we focus our internal attention impacts this susceptibility.
Figure from Hyojeong’s paper [top]: Changes across time in the links between perception, prediction, and subsequent memory in the (A) incongruent and (B) congruent condition. Hypothesized mental representations for prediction and perception across given trials (top). Logistic regression results (coefficient estimate: β) linking classifier evidence and recognition accuracy are shown separately for prediction (middle) and perception (bottom) for each position and across positions in both the incongruent and congruent conditions. Statistics are based on bootstrap analyses with 1,000 iterations. Error bars represent 95% CI.
Figure from Remy’s paper [bottom]: Memory-trained decoding in VTC and IPS. After functional alignment of fMRI data from all participants into a common space, a classifier was trained and tested within each trial period. A) VTC decoding. Similar to perception-trained decoding, the information about the cued item was present before and after distraction, with more post-distraction information on switch trials than stay trials. B) Region-of-interest masks. Cortical VTC and IPS masks of a representative participant. C) IPS decoding. IPS allowed for successful decoding of cued items before but not after distraction. Error bars represent ±1 SEM across leave-one-participant-out cross-validation. Vertical light-gray distributions represent null permuted distributions created with shuffled labels. Horizontal dashed lines represent theoretical chance.
MAY 28, 2019
Ethan, James, and Jarrod publish in NeuroImage
Their research to be published in July’s issue of NeuroImage used real time fMRI and decoded neurofeedback from individual finger movements. Over the course of several fMRI sessions, subjects learned patterns associated with each finger and then neurofeedback was used to assess performance. Offline simulations helped predict performance at both the group and individual level.
The article, “A simulation-based approach to improve decoded neurofeedback performance”, can be downloaded from here: https://www.sciencedirect.com/science/article/pii/S1053811919302629?via%3Dihub
MARCH 22, 2019
Lab’s research on forgetting featured in NY Times and other news outlets
Jarrod and Tracy’s research on directed forgetting, recently published in the Journal of Neuroscience, was covered by the New York Times and was also featured in the Times’ Daily Briefing following the release of the piece.
They were also interviewed by KXAN, a local NBC news affiliate. To read more, check out the news story here, including a 2-min segment that aired on March 11, 2019:
A variety of other news sources also covered the story:
CBC Radio — March 30, 2019:
Top of Mind on BYUradio — April 11, 2019:
The image above created by Daniel Zender and was the image featured in the NYT article.
FEBRUARY 22, 2019
Jarrod presents at this month’s UT Brainstorms: A Conversation on the Brain
Jarrod spoke at this month’s edition of UT Brainstorms, an event put on by the university’s Department of Neuroscience. His talk, entitled ‘The Distracted Brain: A Conversation about Attention, Memory, and … Uh, I Forget”, presented some of the central themes of the lab’s work to the general public. Following the talk was a panel comprised of three other UT professors, Dr. Jessica Church-Lang, Dr. Joey Dunsmoor, and Dr. Andrew Watrous, that answered questions from the audience.
Some of the slides, including the one pictured here, were created by Hyojeong Kim.
FEBRUARY 18, 2019
Tracy and Jarrod’s directed forgetting study published in JNeuro
Tracy and Jarrod’s article entitled “More is less: increased processing of unwanted memories facilitates forgetting” is now in press at the Journal of Neuroscience! This study uses fMRI and machine learning methods to show new evidence that intentional forgetting involves an enhancement of memory processing in sensory cortex to achieve directed forgetting of recent visual experiences. This enhancement temporarily boosts the activation of the memory representation and renders it vulnerable to disruption via homeostatic regulation. Contrary to intuition, deliberate forgetting may involve more rather than less attention to unwanted information.
Figure: Pattern classification of fMRI data from directed-forgetting task. Target-nontarget category classifier evidence for TBF (yellow) and TBR (black) trials. Classifier evidence scores were not shifted to account for hemodynamic lag. (Ribbon thickness indicates s.e.m. across participants, n = 20; *P = 6.789e-8.
FEBRUARY 18, 2019
Allison wins VSS graphics competition
One of the LewPeaLab grad students, Allison Bruning, entered and won the annual Vision Sciences Society’s graphics competition. As the winner of the Program Cover Competition, the image she designed will be the VSS 2019 Program cover. Be on the look out for her graphic design at this year’s conference in May!
DECEMBER 11, 2018
Jarrod publishes in Neuropsychologia with Marie Banich from CU Boulder
Jarrod recently published Turning down the heat: Neural mechanisms of cognitive control for inhibiting task-irrelevant emotional information during adolescence with Marie Banich in the journal, Neuropsychologia. The abstract is below:
"One major question in the cognitive neuroscience of cognitive control is whether prefrontal regions contribute to control by upregulating the processing of task-relevant material or by downregulating the processing of task-irrelevant material. Here we take a unique approach to addressing this question by using multi-voxel pattern analysis, which allowed us to determine the degree to which each of the task-relevant and task-irrelevant dimensions of a stimulus are being processed in posterior cortex on a trial-by-trial basis. In our study, adolescent participants performed an emotion word – emotional face Stroop task requiring them to determine the emotional valence (positive, negative) of a task-relevant word in the context of a task-irrelevant emotional face. Using mediation models, we determined whether activation of a major cognitive control region, the dorsolateral prefrontal cortex (DLPFC), influences reaction time on a trial-by-trial basis directly or if it does so indirectly by modulating processing of the task-relevant and/or task-irrelevant information in posterior brain regions. To examine the specificity of the effects observed for the DLPFC, similar analyses were performed for the amygdala, a brain region involved in processing of the salient task-irrelevant emotional information. For both congruent and incongruent trials, increased DLPFC activity on a given trial was associated with reduced perceptual processing of the task-irrelevant face, consistent with the idea that top-down cognitive control can modulate processing of task-irrelevant information. No effect of DLPFC activity was observed on processing of the task-relevant word. However, increased processing of the task-relevant word was associated with longer RT on congruent trials but not incongruent trials, which may reflect a need for greater processing of the task-relevant word to overcome any influence of the pre-potent task-irrelevant face. In a more exploratory aspect of our investigation, multi-level moderated mediation models were used to examine the influence of individual differences on the observed brain-behavior relationships. For congruent trials, the influence of task-irrelevant face processing on RT was decreased in individuals with higher self-reported Executive Control and increased in those with higher levels of self-reported Negative Affect. These results suggest that cognitive control regions in prefrontal cortex during adolescence can suppress the processing of task-irrelevant information in sensory cortex to influence performance (RT). The processing of task-relevant information may also influence performance, but such processing did not reveal evidence of being modulated by cognitive control regions. Moreover, these effects are sensitive to individual differences in the self-reported ability to exert cognitive and affective control. As such, we provide insights into the more precise mechanisms by which cognitive control influences task performance on a trial-by-trial basis during adolescence."
DECEMBER 11, 2018
Allison Bruning joins the lab
Second year Psychology student Allison Bruning will be joining the lab for the spring semester. She is a Center for Perceptual Systems (CPS) grad student. Welcome Allison!
OCTOBER 29, 2018
Landry submits video for Texas Student Research Showdown
Undergraduate research assistant Landry Bulls submitted a video entitled Transcranial Infrared Laser Stimulation and Cognitive Control for the 2018 Texas Student Research Showdown. His experiment is under the supervision of Dr. Jarrod Lewis-Peacock and Dr. Francisco Gonzalez-Lima. Current RA Nico Bustos and former RA (now at the University of Pittsburgh) Bettina Bustos are also assisting with the project.
You can check it out here: https://www.youtube.com/watch?v=JYQ_9NZrVVE&feature=youtu.be
OCTOBER 1, 2018
New fall additions to the LewPea lab
This fall, we have two new additions to our lab as well as one research assistant joining us full time. Elizabeth Lorenc is starting her post-doc in the lab following the recent completion of her PhD from the University of California, Berkeley. Justin Kilmarx is joining as a mechanical engineering graduate student and will be co-advised by James Sulzer. Stephanie Jeanneret has been a research assistant in the lab for several years and will now be a full time post baccalaureate researcher as she continues the work she did for her senior honors thesis.
OCTOBER 1, 2018
Lab attends 3rd annual DAAMM in Waco
Many of the members of the lab attended the third annual Dallas & Austin Area Memory Meeting (DAAMM) early in September at the Veterans Affairs Medical Center in Waco, Texas. The objective of the gathering is to have an informal meeting of memory research labs where current research and data, including works in progress, can be discussed.
SEPTEMBER 21, 2018
Seth awarded Trainee Professional Development Award from Society for Neuroscience
Seth Koslov has been selected to receive a 2018 Trainee Professional Development Award (TPDA) from the Society of Neuroscience to present his work in San Diego this November. He will be presenting his poster, ‘Managing cognitive control for prospective memory in dynamic environments’ at the Trainee Professional Development Awards Poster Session as well as giving a nano talk.
MARCH 21, 2018
Lab publishes review paper on removal from working memory
Dr. Lewis-Peacock’s removal theory paper, “The removal of information from working memory” has been accepted by the Annals of the New York Academy of Sciences”. The collaborative paper discusses what happens to goal-relevant information after it is no longer needed. This outdated information is often removed, reducing access to the information and making it easier to encode newer, more relevant information. This process is separate from forgetting due to decay or interference. The potential mechanisms and limitations of removal are discussed as well as evidence for and against this process.
MARCH 19, 2018
Lea publishes paper on refreshing and elaboration in Memory & Cognition
Lea’s paper, ‘The effects of refreshing and elaboration on working memory performance, and their contributions to long-term memory formation’, was published in Memory & Cognition. Her research looks at the cognitive processes of refreshing, meaning the focusing of attention on memory representations, and elaboration, referring to linking representations with existing knowledge. Elaboration was found to benefit long term memory but not working memory. Refreshing preserves immediate memory but does not improve it above the level achieved without any processing at all.
MARCH 1, 2018
Lab receives 5-year NIH grant to study forgetting
Dr. Lewis-Peacock received a 5-year R01 grant from the National Institute of Health (NIH) and National Eye Institute (NEI) to study human memory with fMRI in a project titled “Biasing the forgetting of visual memories.”
FEBRUARY 22, 2018
Remy publishes paper on decoding working memory using attentional biases
Remy’s paper entitled ‘Behavioral decoding of working memory items inside and outside the focus of attention’ is currently in press at the Annals of the New York Academy of the Sciences. His study looks at how people hold multiple items in working memory and the behavioral consequences of focusing attention on a subset of those items. He used a behavioral decoding method to show that attention is biased towards memory items that receive focused attention but not to memory items outside the focus of attention.
FEBRUARY 19, 2018
Stephanie to present at the 2018 Stanford Research Conference
Stephanie’s application for the Stanford Research Conference was accepted and she is currently being considered to deliver a talk at the conference that will take place on April 13-15 at Stanford University. The Stanford Research Conference is a part of SURA, an association founded at Stanford to promote undergraduate research and provide students with a community to discuss and further their research. The annual symposium serves as a forum for students to present their work as well as hear from a variety of distinguished researchers in the scientific community.
FEBRUARY 5, 2018
Lea Bartsch visits lab for the spring from the University of Zurich
We are very happy to announce that Lea Bartsch will be visiting the Lewis-Peacock lab during the Spring of 2018. She is a 3rd year PhD student from the University of Zurich in Switzerland and is visiting the lab for 3 months to analyze MRI data from her project studying processes in working and long-term memory and their contribution to age-related deficits.
OCTOBER 23, 2017
Stephanie awarded Undergraduate Research Fellowship and Burke-Smith Scholarship
Stephanie’s honors thesis “Competition and forgetting during context-based episodic memory retrieval” was selected as an awardee for a Fall 2017 Undergraduate Research Fellowship. These fellowships are a valuable tool for supporting undergraduate research across all disciplines. Stephanie also received the Marion Burke-Smith Scholarship from the College of Liberal Arts Honors Program for her research in the lab.
JUNE 29, 2017
Dr. Lewis-Peacock attends workshop on working memory
Dr. Lewis-Peacock was invited to participate in the Crossroads of Attention in Working Memory Workshop held at the Hotel Bains D’Ovronnaz in Switzerland in the summer of 2017 . The workshop concentrated on the theoretical processes of consolidation, refreshing, and removal of information and how they relate to ideas of attention and working memory. Dr. Lewis-Peacock’s talks focused on the concept of removal. A special issue in the New York Academy of Sciences will follow the workshop, including both theoretical papers and empirical/modeling papers covering the ideas discussed at the workshop.
MARCH 4, 2017
CBC Radio interviews Remy for his work on lucid dreaming
Remy’s research on lucid dreaming has been featured in an broadcast by CBC (Canadian Broadcast Corporation). Remy has done previous work on lucid dreams during his undergrad at University of Missouri, and maintains this interest in altered states of consciousness (including dream states). He is working in the Lewis-Peacock Lab to study the basic mechanisms of attention and memory that are critical components to consciousness.
You can access the broadcast here.
MARCH 1, 2017
Engineering graduate student Allison Berman joins the lab
We are very happy to announce that Allison Berman will be joining the Lewis-Peacock lab in the Spring of 2017. She will continue her studies in the Ph.D. program in Electrical and Computer Engineering here at UT Austin. Allison will be working on a real time fMRI project with graduate student Ethan Oblak. Welcome Allison!
FEBRUARY 15, 2017
New Scientist highlights Remy’s research on lucid dreaming
Remy’s research on lucid dreaming has been featured in New Scientist. The article discusses his work done in a previous lab at the University of Missouri St. Louis. In the article, “I can control a computer with my mind – from inside a dream,” Remy discusses his motivations for his research, his experience, and the implications for lucid dreaming in the future.
You can read the article here.
JANUARY 17, 2017
Neuroscience graduate student Gus Hennings rotates in the lab
We are very happy to announce that Gus Hennings will be joining the Lewis-Peacock lab for the Spring of 2017. Gus is a Ph.D. student in the Department of Neuroscience here at UT Austin. He will be joining our lab’s efforts exploring the role of contextual information in memory retrieval. Welcome Gus!
JANUARY 16, 2017
NPJ Science of Learning highlights lab’s research on forgetting
Following the research poster presentation of Tony Dutcher and Stephanie Jeanneret at the Society for Neuroscience 2017 annual meeting in San Diego, they have published an article for NPJ Science of Learning (Jeanneret, S., Dutcher, A., Lewis-Peacock, J.A., 2017). The article discusses the Lewis-Peacock Lab’s work on retrieval-induced forgetting (RIF).
You can read the story here.
JANUARY 10, 2017
Dr. Lewis-Peacock leads workshop on MVPA at University of Zurich
Dr. Lewis-Peacock led a 3-day workshop in early January 2017 on Multivariate Pattern Analysis (MVPA) of fMRI data for doctoral students at the University of Zurich in Switzerland.
DECEMBER 8, 2016
Drs. Sulzer and Lewis-Peacock receive Kleberg Foundation grant on real-time fMRI
Drs. James Sulzer and Jarrod Lewis-Peacock received a 3-year grant from the Kleberg Foundation to study motor learning with real-time fMRI in a project titled “Neurally guiding fine motor recovery after stroke.”
To read more about the Kleberg Foundation click here.
NOVEMBER 9, 2016
Tracy Wang awarded three-year NIH/NINDS postdoctoral fellowship
Tracy Wang has received a F32 NRSA postdoctoral fellowship from the NIH/NINDS to investigate the contributions of neural competition to intentional forgetting and real-time neurofeedback.
OCTOBER 12, 2016
Remy discusses “The Science of Lucid Dreaming”
The St. Louis Science Center hosts monthly science/movie nights. Graduate student Remy Mallett was invited to give a talk on “The Science of Lucid Dreaming” in the Center’s Omnimax theater before a viewing of Inception. In his talk, Remy discussed past and current lucid dreaming research (including some of his undergraduate work), and the cognitive neuroscience of perception. More information about the St. Louis Science Center’s talks can be found here.
NOVEMBER 1, 2016
Dr. Tracy Wang attends Cajal Brain Prize Course in Bordeaux, France
Dr. Wang attended the Cajal Brain Prize Course – the Hippocampus: from Circuits to Cognition part of the CAJAL Advanced Neuroscience Training Programme over October 10th through the 31st. The course consisted of lectures and group projects at the beautiful Bordeaux Neurocampus in Bordeaux, France. There, group projects included investigating prefrontal-hippocampal connectivity using rabies viral vectors in mice in the laboratory of resident instructor Dr. Andreas Frick and how the hippocampus coordinates cortical activity using electrocortiocography and depth electodes in the hippocampus of anesthetized and naturally sleeping rats with visiting instructor Dr. Francesco Battaglia from the Donders Institute.
Keynote speakers included program directors: Jozsef Csicsvari, Charan Ranganath, Mario Carta, and Christophe Mulle spanning topics from cellular and systems to cognitive levels.
CAJAL Advanced Neuroscience Training Programme is supported by the Federation of European Neuroscience Societies (FENS)
Dr. Wang was supported in part by the Journal “Hippocampus” for the purpose of attending this program.
AUGUST 1, 2016
Neuroscience graduate student Tony Dutcher rotates in the lab
We are very happy to announce that Tony Dutcher will be joining the Lewis-Peacock lab for the Fall of 2016. Tony is a Ph.D. student in the Department of Neuroscience here at UT Austin. He will be joining our lab’s efforts exploring the role of contextual information in memory retrieval. Welcome Tony!
AUGUST 1, 2016
Psychology graduate student Remington Mallet joins the lab
We are very happy to announce that Remy Mallet will be joining the Lewis-Peacock lab in the Fall of 2016. He will continue his studies in the Ph.D. program in Cognitive Neuroscience in the Department of Psychology here at UT Austin. Remy will be beginning work in the lab studying neural representations of working memory. Welcome Remy!
JULY 20, 2016
Dr. Lewis-Peacock featured in recent “Views & Brews” podcast
Recently, Jarrod Lewis-Peacock, Laura Colgin and Michael Drew were invited to continue their discussion of “The Neuroscience of Change” as a part of a podcast taping for KUT’s “Views & Brews”. More information about “Views & Brews” can be found here.
JUNE 24, 2016
NIH grant awarded to Drs. Lewis-Peacock & Banich to study working memory clearing
Dr. Jarrod Lewis-Peacock and his colleague Dr. Marie Banich from Colorado University in Boulder and were recently awarded a R21 grant by the National Institutes of Health (NIH) to study what happens to working memory representations when we clear them from our minds, and whether this clearing process is diagnostic of other meaningful psychological factors across individuals . The project is titled “Clearing the Contents of Working Memory: Mechanisms and Representations” and it will use fMRI and multivariate pattern analyses to explore these questions in the healthy adult brain.
MAY 31, 2016
Mark Hollenbeck accepts job at Blackfynn
Graduate student Mark Hollenbeck is finishing his M.S. in Computer Science and has recently accepted a position as a scientific software engineer at the technology startup company Blackfynn located in Philadephia. Blackfynn integrates complex neuroscience data to enable the development of life-saving therapeutics for debilitating human disease. Congratulations and good luck Mark!
MAY 16, 2016
Dr. Lewis-Peacock discusses “The Neuroscience of Change”
Dr. Lewis-Peacock participated in a faculty panel discussion at the Center for Learning & Memory’s “Memory Matters” bi-annual community outreach event. The discussion topic for this event was ‘The Neuroscience of Change: how current research in neuroscience could help us live better to nurture brain health, remember more, and imagine a brighter future’. More information about the meeting can be found here.
If you’d like to listen to the discussion, you can find the KUT pod cast here.
APRIL 6, 2016
Science News highlights lab’s research on forgetting
Following Tracy Wang’s presentation of a poster at the Cognitive Neuroscience Society 2016 annual meeting in New York, she has been featured in an article for Science News (Sanders, 2016). The article discusses the Lewis-Peacock Lab’s work on intentional forgetting.
You can read the story here.
MARCH 14, 2016
Psychology graduate student Seth Koslov joins the lab
We are very happy to announce that Seth Koslov will be joining the Lewis-Peacock lab in the Spring of 2016. He will continue his studies in the Ph.D. program in Cognitive Neuroscience in the Department of Psychology here at UT Austin. Seth will be beginning work in the lab on our prospective memory research, exploring factors that can bias people to use proactive vs. reactive control strategies. Welcome Seth!
JANUARY 1, 2016
Engineering graduate student Keum San (Gold) Chun joins the lab
We are very happy to announce that Keum San (Gold) Chun will be joining the Lewis-Peacock lab in the Spring of 2016. Gold will continue pursuing his Masters in the Electrical and Electronics Engineering program here at UT Austin. Welcome Gold!
SEPTEMBER 1, 2015
Drs. Sulzer and Lewis-Peacock receive UT BRAIN seed grant to develop real-time fMRI methodology
Drs. James Sulzer and Jarrod Lewis-Peacockreceive 2-year UT BRAIN seed grant entitled “Adaptive Brain Training Using fMRI Neurofeedback” from The University of Texas System-Neuroscience and Neurotechnology Research Institute (UTS-NNRI).
To read more about the UT Brain seed grant program click here.
JULY 15, 2015
NPR highlights lab’s research on forgetting
Recently, NPR produced segment highlighting the Lewis-Peacock & Norman (2014) Nature Communications paper on competition in working memory leading to forgetting.
You can read (and listen to) the story here!
JANUARY 25, 2015
Princeton press release for memory pruning study
The scientific press release team at Princeton University created this excellent feature on the research featured in the article “Pruning of memories by context-based prediction error,” by Kim, Lewis-Peacock, Norman, and Turk-Browne that appeared in 2014 in the Proceedings of the National Academy of Sciences. It includes an adorable cartoon, narrated by Nick Turk-Browne, describing the key finding in our study. This story was featured on the Princeton University homepage on Jan 8, 2015.
NOVEMBER 5, 2014
Lab publishes research on competition-dependent forgetting in Nature Communications
“Competition between items in working memory leads to forgetting”
Rapidly switching the focus of attention is believed to impair memory but it is unclear how. Lewis-Peacock and Norman use brain imaging and multivariate analysis to show that when two memories briefly and closely compete in the brain, there is a lasting impairment in the ability to remember these thoughts.
You can read more here!
AUGUST 1, 2014
Computer science graduate student Mark Hollenbeck joins the lab
We are very happy to welcome Mark Hollenbeck to the lab while he pursues a M.S. in the Department of Computer Science at UT. Mark completed a B.S. in Computer Engineering at Northeastern University in 2009. Upon graduation, he remained in Boston and worked in Bradford Clark Dickerson’s lab studying memory, language, attention, and affective cortical networks using various neuroimaging and analysis methods, and he also worked in Lisa Feldman Barrett’s lab studying the neuronal properties of affect using resting-state functional connectivity and task-related fMRI. Mark will be joining our lab’s efforts developing memory & attention experiments using real-time fMRI.
MAY 16, 2014
Dr. Lewis-Peacock joins Memory Disorders Research Society
On May 16, Dr. Lewis-Peacock was invited to become a member of MDRS: Memory Disorders Research Society, a group of internationally renown researchers focused on the study of memory in its various incarnations. As a postdoc back in 2012, Jarrod was invited to attend and speak at the annual meeting of MDRS held in Davis, CA. That meeting immediately became his favorite scientific meeting based on the high level of thoughtful discourse and the efficient presentation of bleeding-edge science on memory. It is an honor for Jarrod to officially join the society, and he looks forward to attending this year’s meeting to be held right here in Austin, TX. Here’s the meeting webite: http://clm.utexas.edu/mdrs. Local UT Austin research assistants, graduate students, and postdocs are invited to attend the meeting, and I highly recommend taking advantage of this opportunity!
AUGUST 1, 2014
Psychology graduate student Linnéa Marks joins the lab
Linnéa Marks will be joining the lab this Fall 2014 and entering the Ph.D. program in Cognitive Neuroscience in the Department of Psychology here at UT Austin. She is coming to us from Grand Valley State University in Michigan, where she is currently completing her degree in Psychology, with minors in Applied Statistics and Philosophy. In the lab, Linnéa’s research will be exploring the underlying neural bases of short- and long-term memory, and will address the interactions between memory and other cognitive functions. Welcome Linnéa!