Research Team

 

Prasad Shirvalkar, MD, PhD

Head of Lab & Associate Professor

Department of Anesthesiology (Pain Management)

Department of Neurological Surgery

Department of Neurology

Weill Institute of Neuroscience, UCSF School of Medicine

B.S., Neural Science, New York University, 2003

M.D., PhD, Neuroscience, Icahn School of Medicine at Mount Sinai, 2012

Postdoctoral Fellowship, Neuroscience, Rockefeller University, 2012

Internship & Residency, New York Presbyterian -Weill Cornell Medical College and Memorial Sloan Kettering Cancer Center, Neurology, 2016

Clinical Fellowship, University of California San Francisco, Pain Management/Anesthesiology, 2017

Dr. Prasad Shirvalkar is the Principal Investigator of UCSF Clinical Trials for refractory chronic pain (NCT03029884 and NCT04144972) and a neurologist and interventional pain medicine specialist at the UCSF Pain Management Center at Mount Zion. He provides the full spectrum of care for chronic pain conditions, including conservative, nonsurgical treatments such as medications and nerve blocks (anesthetic injections near nerves that are sending pain signals). He also treats patients with advanced neuromodulation therapy by implanting peripheral and spinal cord stimulators, which are devices that relieve pain by sending electrical signals to the spine.


Fun Fact: Prasad was a member of the Oakland Raiders band.

Email: p[email protected]

 



Co-Investigators

Kristin Sellers, PhD

Assistant Adjunct Professor 

Dr. Sellers is an Assistant Adjunct Professor in the Department of Neurological Surgery. She studies intracranial electrical stimulation for the treatment of neuropsychiatric disorders including major depressive disorder and chronic pain. She works to translate learnings from early stage clinical trials of closed-loop neuromodulation for the development of neurotechnologies and supporting infrastructure.

 


Julian Motzkin MD, PhD

Assistant Professor

 

 



Postdoctoral Researchers

Yiyuan Han

B.Eng, Information Engineering, Southern University of Science and Technology, 2019

PhD, Computer Science (Neural Engineering), University of Essex, 2023

Yiyuan's research focuses on decoding pain-related states from brain signals. Her primary interests lie in understanding the brain networks underlying pain processing, developing machine learning methods for pain decoding, and advancing closed-loop neuromodulation approaches for chronic pain treatment, particularly through deep brain stimulation (DBS).
Fun Fact: Yiyuan has collected Coca-Cola bottle caps and labels in seven different languages—Chinese, English, French, German, Italian, Spanish, and Swedish.

Email: [email protected]


 

Tess Veuthey, MD, PhD

Tess aims to integrate neuromodulation and psychedelic therapies to develop safe, effective treatments for chronic pain and neuropsychiatric conditions—both in traditional settings and beyond. Her research interests span systems neuroscience, chronic pain, psychedelics, and health disparities. During her PhD, she studied how rodents’ neural representations of movement evolve during motor skill learning and brain–machine interface tasks. Currently, she is leading a trial examining how the neural signature of pain changes during and after psilocybin administration in chronic pain patients.

Fun Fact: Her favorite animal is the capybara, a real-life ROUS known for its calm friendliness and adaptability to diverse environments. 

Email: [email protected]

 


 

Ritwik Vatsyayan

B.Tech, Electronics and Communication Engineering, Indian Institute of Technology, Guwahati, 2018

MS, PhD, Electrical and Computer Engineering (Medical Devices and Systems), University of California San Diego, 2024

Ritwik's research centers on modeling the effects of neurostimulation to drive the brain from diseased, high-pain states toward healthy, low-pain states, with a focus on deep brain stimulation. His doctoral work explored tissue damage from microelectrode stimulation and led to the development of novel stimulation paradigms for lower limb rehabilitation in spinal cord injury.

Fun Fact: He is an avid hiker with a healthy dose of acrophobia- loves going up mountains, hates looking down!

Email: [email protected]

 



Graduate Students

 

Jeremy Saal

B.S., Cognitive Science, University of California Santa Cruz, 2017

M.S., Cognitive Neuroscience, Maastricht University

Jeremy is currently a graduate student in the Shirvalkar lab, where his research focuses on network analysis and decoding related to chronic pain, as well as investigating the cognitive aspects of pain expectation. His previous work involved decoding navigational features from the hippocampus using intracranial recordings.

Fun Fact: Jeremy was born in the parking lot at Stanford!

Email: [email protected]

 


 

Lucille Johnston

B.S., Behavioral Neuroscience, Northeastern University, 2020.

Hailing from the east coast, Lucy entered the UCSF Neuroscience graduate program with a bachelor's of science in behavioral neuroscience from Northeastern University, having worked in labs at Harvard University, New York University, and Columbia University. In the Shirvalkar lab, Lucy is interested in studying the neural underpinnings of the cognitive processes underlying pain processing, including placebo and nocebo. 

Fun Fact: In high school, Lucy was in a movie (she has an IMDb page)!

Email: [email protected]

 



 

Clinical Research Coordinators

Chad Sitgraves, MS


Catherine Borror

 

Catherine Borror is a Certified Clinical Research Professional (CCRP) through the Society of Clinical Research Associates (SOCRA) with experience in study design and coordination at UCSF working in the Neurology Department.

Fun Fact: Catherine was in Kidz Bop!

Email: [email protected]

 

 


Donna Shahreza

B.S., Molecular Biology, UC Santa Barbara, 2020.

With a background in both academic research and the biotech industry, Donna is excited to apply her diverse experience to support research in DBS for chronic pain as a Clinical Research Coordinator.

Fun Fact: Donna is an avid mountaineer and traveler—in 2023 she spent her summer summitting the highest mountain in the Middle East!

Email: [email protected]

 



Undergraduate and Rotation Students

Aditya Behal

B.S., Computer Science and Biology, Rensselaer Polytechnic Institute, 2024.

Aditya is an incoming student in the joint UC Berkeley - UCSF bioengineering Ph.D. program and has worked in the lab for 2 summers. In the summer of 2023, he worked on characterizing the associations between FitBit data (physical activity and sleep) and chronic pain. In the summer of 2024, he was looking at the neural circuitry involved in chronic pain using the single pulse electrical stimulation (stage 0) dataset. Currently, he is investigating the ambulatory evoked potentials dataset to uncover which features best decode chronic pain. 

Fun Fact: He was a nationally-ranked chess player in high school!

Email: [email protected]

 


Lab Alumni

 

Ryan Leriche

Ishan Kanungo, MD

Graduated Medical Student 

 

Thomas Wozny, MD

Neurological Surgery Resident / Postdoctoral Scholar

 

Akash Shamugan, MD

Medical Student

Ashlyn Schmitgen, PA

Clinical Research Coordinator

 

Anna Shaughnessy

Clinical Research Coordinator

 

Bella Joseph

Clinical Research Coordinator

 

 

Joanna Lin

Clinical Research Coordinator

Jordan Prosky

Clinical Research Coordinator

 

Gregory Chin

Clinical Research Coordinator