Erik Herzog, PhD
Viktor Hamburger Distinguished Professor, Department of Biology; Director, St. Louis Neuroscience Pipeline Program
- Phone: 314-935-8635
- Email: herzog@nospam.wustl.edu
Erik is a chronobiologist, studying the molecules, cells and circuits that underlie daily rhythms in physiology and behavior. He is Professor of Biology and Neuroscience at Washington University. He studied Biology and Spanish as an undergraduate at Duke University and Neuroscience as a graduate student with Dr. Robert Barlow at Syracuse University. He did postdoctoral research with Dr. Gene Block at the University of Virginia. In 2000, Erik started his lab at Washington University. His laboratory has discovered mechanisms underlying how circadian clocks regulate physiology, behavior and health.
Daniel Granados-Fuentes, PhD
Senior Scientist
- Phone: 314-935-7806
- Email: dgranado@nospam.wustl.edu
I received my Ph.D. from UNAM in Mexico City. My research aims to reveal the mechanisms of circadian regulation of olfaction and sleep-wake. I combine multielectrode array recordings, real-time luciferase monitoring, olfactometry, and locomotor assays. Here are some of my recent publications.
Tatiana Simon, MS
Research/Lab Assistant
- Phone: 314-935-3330
- Email: simont@nospam.wustl.edu
I am from Belarus. Speaks Belarusian, Russian and English.
I did my undergrad in Belarus, Minsk – Bs. in Biology and Chemistry. Graduation program in Plant Biology at National Academy of Science of Belarus. MS in Cell Biology at WashU.
Hobby: I like to ice-skate, gardening, cooking, and making the bread.
My cooking YouTube channel: https://www.youtube.com/channel/UCzUfr8BQrmr-GKFxX5pmWtQ
Instagram: https://www.instagram.com/tatianasimon300/
Nigina Aripova
Undergraduate Researcher
- Email: a.nigina@wustl.edu
I am an undergraduate student (junior) majoring in Neuroscience on a Biology track. I joined the Herzog lab in September 2022, researching daily rhythms in glioblastoma growth. I’m interested in the area of neuro-oncology and using chronobiology to improve the efficacy of existing treatments. In my free time, I love hiking with friends, playing tennis and violin, and watching some good movies.
Antonella Arrieta
Graduate Student
- Email: aarrieta@fcien.edu.uy
I hold a B.S. in Biochemistry from the Faculty of Sciences at the University of the Republic (Uruguay) and a Master’s degree in Biological Sciences with a specialization in Neurosciences from the Program for the Development of Basic Sciences (PEDECIBA, Uruguay). I am interested in studying the synchronization of biological rhythms (such as activity-rest cycles, melatonin and cortisol rhythms, and neural activity) between caregivers and their children.
Outside of science, I love painting and writing, experiencing sunsets, and enjoying the colors of autumn.
Sandra Paola Cardenas Garcia
Graduate Student
- Email: cardenasgarcia.s@wustl.edu
I am a graduate student in the DBBS Neuroscience Program. I graduated from the Universidad Nacional de Colombia in 2019. After college, I did research at the Universidad de Santiago de Chile and Albert Einstein College of Medicine. In 2022, I joined the Herzog lab to study the neuronal properties by which circadian rhythms synchronize in the SCN to regulate multiple behavioral outputs. In my spare time, I like to draw, paint, and read literature.
Cara Conforti
Undergraduate Researcher
- Email: c.conforti@wustl.edu
I am an undergraduate planning to major in Biology on the Neuroscience track, and I joined the Herzog lab in January 2022. Currently, I study the rapid splitting of mouse circadian system rhythms in response to enhanced behavioral feedback. Outside of school, I can be found playing guitar and bass, going on road trip adventures, and reading history books.
Nikhil Lokesh, PhD
Staff Scientist
- Phone: 314-935-5214
- Email: nikhil@wustl.edu
After my baccalaureate in engineering, I earned my Ph.D. from JNCASR, India where I studied circadian clock evolution and chronotypes. As a Humboldt Postdoctoral Fellow in Charité – Universitätsmedizin Berlin, I explored the role of stochasticity in circadian clocks. Here in the Herzog Lab, I employ theory and experimental techniques to study network connectivity and synchronization of the SCN and seasonality in mice.
My other interests include psychology, philosophy and eastern mysticism.
More about me: https://klnikhil.wordpress.com/
Carol Peng
Undergraduate Researcher
- Email: carol.p@wustl.edu
I am an undergraduate student (rising sophomore) at WashU intended to major in Biology on the Computational Biology track. I joined the Herzog Lab in the summer of 2024. Outside of school, I enjoy cooking, baking, swimming, and playing Guzheng (a type of Chinese traditional music instrument).
Lance Riley, PhD
Senior Scientist
- Email: lriley@wustl.edu
After my undergraduate studies in Biology at Hendrix College, I earned my PhD with Dr. Karyn Esser at the University of Florida where I identified mechanisms linking the molecular clock to skeletal muscle structure and function. I worked as a postdoctoral fellow at Vanderbilt University studying the mechanosensitive pathways regulating fibrosis in the cardiovascular system before working as a scientist at a cancer diagnostics start-up company. In the Herzog lab, I am applying my knowledge of both circadian rhythms and mechanobiology to develop regenerative therapies for arthritis.
Sofia Salvatore-Lannes
Graduate Student
- Email: sofias@wustl.edu
Alyssa Week
Master’s Student
- Email: week@wustl.edu
I received my BA in neuroscience and psychology from the University of Colorado Boulder in 2023, and am currently working towards my master’s degree in computational biology at Saint Louis University. I’m interested in learning more about how sleep and circadian disturbances impact neural dynamics, and would like to pursue a PhD in neuroscience. Outside of the lab I enjoy running, knitting, and hiking.
Helen Zhang
Undergraduate Researcher
- Email: helen.zhang@wustl.edu
I am an undergraduate sophomore majoring in Biology, Neuroscience Track. I joined the Herzog lab in the fall of 2025. I study with Pao the role of the sodium leak channel (NaLCN) in regulating circadian rhythm in the SCN in mice. Outside of school, I enjoy fiction writing, reading, hiking, and playing the piano.