PaIN Lab People

*The Harper PaIN Lab is not currently seeking team members. Please check this page or contact us for updates.*

Find out more about our current team members and open positions below.


Daniel Harper, Ph.D.

Assistant Professor of Anesthesiology and Physiology, Emory University School of Medicine

Principal Investigator

B.S. in Psychology with Honors, UNC, 2007

M.A. in Psychology (Behavioral Neurosci), UNC, 2011

Ph.D. in Psychology (Behavioral Neurosci), UNC, 2014

Post-doc in Neuroimaging, UMich, 2014-2016

Dr. Harper grew up outside of Charlotte NC, is a Tar Heel born and bred, and thus had no choice but to attend the University of North Carolina as an undergraduate. Unsure of where college would take him, his scientific torch was lit sophomore year in a Sensation & Perception course. The research journey began at UNC, continued post-doc at The University of Michigan, and is currently progressing at Emory with the opening of a new lab! Dr. Harper is passionate about science and hopes to make a positive contribution to society through research, mentoring, teaching, and service. Outside of work, Dr. Harper enjoys spending time with his partner and their two young children.

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Onika Anglin

Research Coordinator II

MPH, University of Pennsylvania, 2016 

BA, Anthropology, Georgia State University, 2012 

BA, Philosophy, Georgia State University, 2012 


Onika has always been interested in public health, and how clinical research informs practice. Prior to joining the Pain Lab Onika worked at the Philadelphia Department of Public Health focused on notifiable infectious disease surveillance and antibiotic resistance clinical research. She is passionate about improving health equity and using clinical research as a means to improve resources and access to healthcare for marginalized populations. Her current interests lie in gaining a better understanding of pain processing and how improved knowledge of this topical subject can inform interventions to address the current opioid epidemic.

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Dr. Ali Alsouhibani

Postdoctoral Fellow

B.S. in Physical Therapy, King Saud University, Saudi Arabia 2010

M.S. in Rehabilitation Sciences, UIC, Chicago 2014

Ph.D. in Clinical Translational Rehabilitation Health Sciences, Marquette University, Milwaukee 2019

Dr. Alsouhibani is a physical therapist from Saudi Arabia with some clinical experience treating patients with musculoskeletal pain. During his clinical work, he was challenged with a few patients that didn’t respond to PT treatments. In pursuit of an understanding of chronic pain, he moved to the U.S. and completed his Masters degree in Rehabilitation sciences where he investigated the relationship between proprioception, vibration sense, and pain in patients with knee osteoarthritis. His PhD explored the effects of isometric exercise on patients with Fibromyalgia. Dr. Alsouhibani continues to make progress as a post-doctoral fellow in the Harper PaIN lab investigating pain processing in individuals with and without chronic pain. During his free time, Dr. Alsouhibani loves to spend time with his partner and their two young children.

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Maggie Gunter

Undergraduate Research Assistant

B.S. Neuroscience & Behavioral Biology, Emory University, 2021


Since high school, Maggie Gunter has been interested in studying neuroscience and the function of the brain. As a third year undergraduate of Emory University, she has focused on healthcare accessibility by working with doctors to provide free medical care in Honduras over the summer and the rural United States during the school year. She also has a strong passion for chemistry and worked as a Supplemental Instructor for introductory chemistry and participated in inorganic chemistry research as part of Emory's 2019 SURE program. Her goals are to attend medical school after graduating from Emory and pursue a specialization in neurology with an emphasis on speech-language pathology.

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Matthew Hentschel 

Undergraduate Research Assistant

B.S. Neuroscience & Behavioral Biology, Emory University, 2021


Matthew is originally from Baltimore, MD and came to Emory interested in Physics and Biology. After spending his Freshman summer in biomedical research at the National Institutes of Health, he found a passion in the clinical application of Neuroscience. Outside of school, Matthew is a Registered Behavior Technician and a health and fitness enthusiast. He hopes to attend medical school after gaining meaningful academic and research experience at Emory. 


Olivia Hoekendijk

Undergraduate Research Assistant

B.S. Neuroscience & Behavioral Biology, Emory University, 2021


Olivia Hoekendijk is an undergraduate student at Emory University. In high school, her interest in healthcare was sparked by her biology and physiology courses. She has continued her scientific career at Emory, majoring in Neuroscience and Behavioral Biology. She has worked in a hospital setting, volunteering in the physical therapy department at San Francisco General Hospital and is excited to begin pursuing research here at Emory. Outside of the classroom, Olivia runs on the varsity track team and enjoys playing the drums. 

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Obinna Fitzgerald Megwa

Undergraduate Research Assistant

B.S. Neuroscience & Behavioral Biology, Emory University , 2022


Obinna is an undergraduate student at Emory University from Dallas, TX who has developed a strong passion for biological and physical sciences during high school. His love for understanding how people tick and how pendulums swing became fortified during his first couple semesters at Emory. While pursuing a BS in Neuroscience & Behavioral Biology and a BA in Physics, Obinna has begun his research journey at the Harper PaIN Lab by utilizing his mathematical and physics background to further the discipline of Neuroscience and solve pressing problems in healthcare.

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Benjamin Riley

Undergraduate Research Assistant

B.S. Neuroscience & Behavioral Biology, Emory University, 2021

Ben discovered a passion for neuroscience early in his undergraduate career when a philosophy course introduced him to the fascinating intractability of the mind-body problem. Since then, Ben has been eager to delve into scientific research with the hopes of bringing to light new connections between neural phenomena and subjective experience. Ben hopes to advance research that could lead to novel therapies and diagnostic procedures which improve quality of life and broaden therapeutic opportunities for those suffering from pain of any kind. Ben hopes to follow these passions into graduate school, whether it be in pursuit of an MD or PhD.



Neuroscience Graduate Student

The Lab has openings and funding for Ph.D. students who are enrolled in Emory's Neuroscience Graduate Program. If you are interested in applying to this graduate program, learn more here. If you are already enrolled in the Program and are interested in doing a rotation in the PaIN Lab, please contact the PI and express your interest.

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Adrian Rivera

Undergraduate Research Assistant

A.A. Biology, The Honors College at Miami Dade College, 2019 

B.S. Neuroscience & Behavioral Biology, Emory University, 2022 

B.A. Economics, Emory University, 2022


Adrian has always been passionate about science and the medical field from a young age. Growing up in Miami, FL he attended The Honors College at Miami Dade College and attained an Associate of Arts with Honors in Biology. Prior to transferring to Emory, he pursued his passion for science as a Laboratory Assistant for the Biology and Physics departments, as well as a peer-mentor for first-year students pursuing STEM degrees. Currently he is pursuing a bachelor’s degree in Neuroscience and Behavioral Biology at Emory, and ultimately hopes to pursue a career in the medical field via a MD/Ph.D. pathway.  


Mia Gregory, B.S.

Research Coordinator

B.S. Biopsychology, Cognition &  Neuroscience, UMich, 2019

B.S. Biomedical Anthropology, UMich, 2019

Mia has been passionate about healthcare and biomedical research since she was young. Throughout her collegiate career she gained research experience working in the field of Microbiology and Immunology both at the University of Chile, Santiago for three months and the University of Michigan for three years as a Research Assistant. She recently received bachelor's degrees in both Biomedical focused Anthropology and Biopsychology, Cognition & Neuroscience from the University of Michigan. Her goal is to attend a neuroscience PhD program after gaining more research experience and learning more neuroimaging techniques in the lab.



Postdoctoral Fellow

The Lab has openings and funding for postdoctoral scholars who are interested in becoming part of our team. In general, the Lab is looking for individuals who are interested in gaining some experience and learning something they don't know during their time in our Lab, while also being open to teaching our Lab members new skills. If you are currently looking for a place to do a post-doc and think you are a good fit for us, contact the PI to discuss your career goals and how you see yourself fitting into the Lab.


Laura Kochlefl

Research Coordinator

B.S. Biology, University of Michigan, 2017

M.P.H. Rollins School of Public Health, 2020


Laura has always been fascinated by the field of biology, first gaining experience in biological research while in high school. Her interest shifted to medicine and healthcare shortly after starting her bachelor’s degree in Biology at University of Michigan. While completing her bachelor’s degree, Laura worked in chronic pain research at Evanston Hospital in her home state of Illinois, and at the Chronic Pain and Fatigue Research Center at University of Michigan. She completed her M.P.H in Global Health at Rollins School of Public Health at Emory University in May 2020.

PaIN Lab Alumni

Former Harper PaIN Lab Members

Find out about what lab alumni are accomplishing in their post-PaIN lab careers below.