![](https://sites.arizona.edu/hscl-lab/files/2023/12/arne_department.jpeg)
Arne Ekstrom, Ph.D.
Principal Investigator
Professor, Department of Psychology and Evelyn McKnight Brain Institute
![](https://sites.arizona.edu/hscl-lab/files/2023/12/li-zheng.jpeg)
Li Zheng, Ph.D.
Research Scientist
I am interested in the temporal interval representation during human episodic memory and navigation using high-resolution fMRI.
![](https://sites.arizona.edu/hscl-lab/files/2023/12/paul-hill.jpg)
Paul Hill, Ph.D.
Research Scientist
The broad focus of my research is episodic memory, with a specific focus on how memory and related processes change with normal aging and neurological disorders. I use a combination of behavioral, neuroimaging, and neuromodulatory approaches to address these questions.
![](https://sites.arizona.edu/hscl-lab/files/2023/12/alana-muller.jpg)
Alana Muller
Psychology Ph.D. Candidate
I am a fifth-year graduate student. My research interests include understanding the cognitive processes involved in spatial navigation using EEG and virtual reality
![](https://sites.arizona.edu/hscl-lab/files/2023/12/sarah-seger.jpg)
Sarah Seger
Neuroscience Ph.D. Student
I am a fourth-year Neuroscience PhD student in the HSC Lab. I am interested in using intracranial EEG to study how neural activity arising from sensory representations and movement interact with subcortical brain structures to support episodic memory and spatial navigation.
![](https://sites.arizona.edu/hscl-lab/files/2023/12/Sameer.jpg)
Sameer Sabharwal-Siddiqi
Psychology Ph.D. Student
Sameer Sabharwal-Siddiqi is a PhD student at the lab. Past research interests span attention, decision-making, emotional attribution, and the role of self-awareness in memory. At the Human Spatial Cognition laboratory, he is invested in directing these interests towards the topic of navigation. He is especially interested in the possibility of combining brain-imaging and VR-based navigation to reveal neural-correlates of spatiotemporal experience
![](https://sites.arizona.edu/hscl-lab/files/2023/12/Sabina.jpg)
Sabina Srokova, Ph.D.
Postdoctoral Fellow
I am a postdoctoral fellow working with Dr. Arne Ekstrom and Dr. Carol Barnes. My graduate work employed fMRI and eye-tracking to examine the behavioral and neural correlates of episodic memory in healthy young and older adults. I currently use fMRI and immersive virtual reality to study the effects of age on spatial memory abilities.
![](https://sites.arizona.edu/hscl-lab/files/2023/12/joshua-garren.jpg)
Joshua Garren
Research Specialist
I’m a Clinical Research Specialist at the Human Spatial Cognition Lab. I am interested in people’s individual differences in memory and spatial navigation ability, especially between old and young adults.
![](https://sites.arizona.edu/hscl-lab/files/2023/12/Matt.jpg)
Matthew Watson
Research Technician
I am a research technician experienced with game engine software development. I use this expertise to troubleshoot and develop Virtual Reality (VR) experiments conducted by the Human Spatial Cognition Lab. I have personal interest in psycholinguistic topics and in exploring what is possible with VR experiments relating to navigation and memory.
![](https://sites.arizona.edu/hscl-lab/files/2024/10/mel-40-683x1024.jpg)
Melanie Gin
Research Technician
I am a research technician with a degree in computer science. I use my programming knowledge to develop eye tracking, troubleshooting, and analysis work. My interest in psychology stems from my sisters having degrees in Psychology, learning more about the mind and how VR can help with memory and navigation.
![](https://sites.arizona.edu/hscl-lab/files/2024/10/IMG_1858-768x1024.jpeg)
Don Chloe Markham
Research Assistant
I am a senior undergraduate neurobiology data collector with experience working with virtual reality, MRI scanning, and animal subjects. I am interested in human behavior, healthy aging, neurogenetic diseases, and how it affects human behavior.
HSCL Alumni
Stephanie Doner – Former lab manager. PhD student at Temple University
Yu Karen Du – Former postdoc. Postdoc at University of Western Ontario
Andrew McAvan – Former Research Specialist. Graduate Student at Vanderbilt
Sevan Harootonian – former Research Specialist. Graduate student at Princeton
Derek Huffman – former postdoc, assistant professor at Colby College
Alexis Oyao – Former lab manager
Lukáš Hejtmánek – visiting scholar, PhD student at Department of Neurophysiology of Memory, Czech Academy of Sciences
Candace Peacock – former PhD student, PhD student with John Henderson
Jennifer Lieberman – former lab manager
Kamin Kim – former postdoc, postdoctoral fellow with Charan Ranganath
Aiden Arnold – former visiting PhD student, now traveling the world
Lindsay Vass – former postdoctoral fellow, data scientist at Facebook
Colin Kyle – former lab manager, graduate student with Carol Barnes
Hui Zhang – former postdoctoral fellow, postdoctoral fellow with Nikolai Axmacher
PhDs Conferred
Mingli Liang – PhD Neuroscience, postdoctoral associate at Yale School of Medicine
Mike Starrett Ambrose – PhD Psychology 2021, postdoctoral scholar at UC Irvine (PI: Liz Chrastil)
Jared Stokes – PhD Psychology 2018, postdoctoral fellow with Julie Schweitzer
Amber Schedlbauer – PhD Neuroscience 2017, postdoctoral fellow with Gene Gurkoff
Millie Copara – PhD Neuroscience 2017, Partner Development Coordinator at FUTURE program of UC Davis
Branden Kolarik – PhD Psychology 2017, Human Factors Scientist with Exponent Engineering and Scientific Consulting
Andrew Watrous – PhD Neuroscience 2013, Assistant Professor of Neurology at UT Austin