Lab members in holiday attire posing around a large wood table

The Tomchik Lab

Our research focuses intensively on uncovering the mechanisms of neuronal plasticity and its alterations in genetic disorders such as neurofibromatosis type 1. We strive to develop and maintain an open, collaborative lab environment, continually increasing the creativity and depth of our science, fostering the development and advancement of our lab members. Our lab is located at the University of Iowa, Carver College of Medicine, in the Department of Neuroscience and Pharmacology and the Iowa Neuroscience Institute. Dr. Tomchik has additional appointments in the Stead Family Department of Pediatrics and the FOE Diabetes Research Center. If you are interested in joining the team, check out our open positions.

Photo of Seth Tomchik

Seth Tomchik

Roy J. Carver Professor of Neuroscience

Dr. Tomchik received his bachelor’s degree in psychology and Ph.D. in biology from the University of Miami. His postdoctoral research at the Baylor College of Medicine and The Scripps Research Institute focused on the neuroscience of learning and memory. He started his lab at Scripps Florida in 2012 and moved to the University of Iowa in 2022. His current research focuses on how learning and neuronal plasticity alter the flow of information in the brain, and how these normal processes are disrupted in disease states.

Aaron Stahl pictured outside in front of bushes at the University of Iowa

Aaron Stahl

Assistant Research Scientist

Dr. Stahl received a bachelor’s/master’s degree in biology from the University of Northern Iowa and a Ph.D. in biology from the University of Cincinnati. His postdoctoral research focuses on the function of neuronal circuits underlying learning and memory.

Photo of Prabhat standing outside in front of an eastern redbud tree in bloom

Prabhat Tiwari

Assistant Research Scientist

Prabhat received his PhD in Life Science from NCBS-TIFR, India. Before joining the Tomchik Lab, he worked as a postdoctoral fellow at Kansas State University. He has experience in Drosophila development and genetics. His current research focuses on neurofibromatosis type I during Drosophila development.

Val in the lab working with fly stocks

Valentina Botero

Postdoctoral Research Associate

Dr. Botero earned her bachelor’s degree in neuroscience and behavior from Mount Holyoke College and her Ph.D. in the Scripps' Skaggs Graduate School of Chemical and Biological Sciences. Her postdoctoral research in the Tomchik lab is focused on studying the effects of neurofibromin loss of function on metabolic homeostasis, including modulating metabolic rate, feeding, and energy stores.

Anneke Kanuss standing in front of a poster-sized image of a biological specimen

Anneke Knauss

Research Associate

Anneke earned her bachelor's degree in Neuroscience from Luther College. She joined the lab in June of 2023 and is researching how Nf1 affects neuronal circuits and behavior.

Photo of Hannah Brunner in front of a lighted brain sculpture

Hannah Brunner

Research Assistant

Hannah earned her bachelor's degree in Chemistry and Biology from Coe College. She joined the lab in May of 2023 and is focusing on the role of Nf1 in metabolic alterations.

Catherine standing outside the PBDB building at the University of Iowa

Catherine Steele

Research Assistant

Catherine earned her B.S. in Genetics at Iowa State University. She joined the lab in the Spring of 2024 and is focusing on the role of Nf1 in regulating metabolism and development.

Photo of Greta standing in front of a science-themed poster

Greta Dahlen

Research Assistant

Greta is completed dual bachelor's degrees in Biochemistry & Molecular Biology and Psychology at Gustavus Adolphus College. She joined the lab in the summer of 2025. Her research focuses on the cellular and molecular mechanisms of Nf1 function.

Photo of Daniel standing in front of a wood panel wall

Dangran (Daniel) Li

Pharmacology Graduate Student

Daniel earned his bachelor's degree in Pharmaceutical Engineering at Jiangnan University and Master's of Pharmacy at Nanjing University. He is currently working toward his Ph.D. in Biomedical Sciences (Pharmacology). His research in the lab focuses on how cellular signaling alterations influence metabolic function in neurofibromatosis type 1.

Photo of Cole standing outside in front of a tree

Cole Collins

Genetics Graduate Student

Cole received his B.S. in Biology from Pensacola Christian College and is working toward his Ph.D. in Genetics at the University of Iowa. His research in the Tomchik lab focuses on the role of Nf1 in nervous system development and function.

Head shot of Prerana standing outside in front of some green plants

Prerana Ramanan

Neuroscience Graduate Student

Prerana received a B.S. in Microbiology, Biotechnology, & Chemistry from Jain University, followed by a M.S. in Clinical and Cognitive Neuroscience from the University of Maastricht. She is working toward her Ph.D. in Neuroscience at the University of Iowa. Her research in the Tomchik lab is focused on the mechanisms of learning and memory.

Photo of Kara West

Kara West

iDREAM Postbacc Scholar

Kara received her bachelor's degree in Psychology from Augustana College and joined the lab to carry out postbacc research. Her research focuses on how Nf1 impacts behavioral sequencing.

Head shot of Jenny standing outside in front of a green wall

Jenny Wagenhoffer

BSURP Summer Student

Jenny is working toward her B.S. in psychology at the University of Massachusetts Amherst. She is joining the lab for the summer of 2025 as part of the Biomedical Scholars Summer Undergraduate Research Program, carrying out research on the role of Nf1 in the nervous system.

Photo of Ethan Rosendahl standing in front of buildings at the University of Iowa

Ethan Rosendahl

Undergraduate Intern

Ethan is pursuing a B.S. in Biology with a focus on Genetics and Biotechnology, along with a Certificate in Public Health at The University of Iowa. In the Tomchik lab, his research focuses on cellular and behavioral experiments to investigate how NF1 affects metabolism, behavior, and underlying cellular processes. 

Alumni

Tamara Boto (postdoc) - Senior Lecturer in Neuroscience, University of Bristol

Thierry Louis (postdoc) - Founder, Atelier du Bois Louis

Marta Koch (postdoc) - Editor-in-Chief, The Lancet Diabetes and Endocrinology

Lanikea King (postdoc) - Regulatory Medical Writer, Agora Biosciences

Connor Broyles (postdoc) - Biochemist, Department of Defense

Genesis Omana Suarez (postbacc) - Graduate Student, Mayo Clinic

Anthony Lange (postdoc) - postdoc, University of Iowa

Jenifer Barrios (undergraduate intern, University of Iowa)

Chevara Joseph (undergraduate intern, FAU)

Yoheilly Velasquez (undergraduate intern, University of Puerto Rico)

Elizabeth "Liza" Lanzon  (undergraduate intern, FAU)

Eliza Grenci (high school Kenan Fellow, Suncoast High School)

Kathi Jindachomthong (undergraduate SURF, Yale)

Nabil Othman (MSTP SUMR student, Marquette University)

Ritu Arya (master's student)

Afshin Khalili (visiting graduate student, Leibniz-Institut Fur Neurobiologie)

Kathy Dieppa (undergraduate intern, MIT)

Simone Ebert (AYRIU International Student, University of Cologne)

Jordan Albrecht (undergraduate intern, University of Alabama)

Breanna Jomsky (undergraduate intern, FAU)

Jordyn Sanner (undergraduate intern, Ohio Northern University)

Sara K. Simpson (undergraduate SURF Fellow, Boston University)

Ari Aviles (undergraduate intern, FAU)

Grace Chalhoub  (undergraduate intern, FAU)

Eamonn Byrnes (undergraduate intern, FAU)

Samay Saxena (high school Kenan Fellow, William T. Dwyer High School)

Bridget Alaimo (undergraduate intern, FAU)

Santiago Montenegro (undergraduate intern, FAU)

Carmen-Maria Garcia (undergraduate intern, FAU)

Michelle Dennis (undergraduate SURF Fellow, Stevenson University)

Varun Lakshmannan (high school intern, South Fork High School)

Nicholas Tyndall  (undergraduate intern, FAU)

Marcel Elkouri (undergraduate SURF Fellow, College of Wooster)

Alisha Goldberg (undergraduate intern, FAU)

Brandon Gilliland (undergraduate intern, FAU)

Stevencia Boisrond (high school intern, BallenIsles Fellow)

Ana Corra (undergraduate intern, FAU)

Cara Busheme (undergraduate intern, FAU)

Lab experiences

Lab holiday party

Aaron working at the biosafety cabinet

Val's Ph.D. commencement

Lab on the Road