MEET THE TEAM

At Carlson Lab our team is dedicated to continuing and expanding our mission and are an unbelievable pool of talent.

Get to know the people at Carlson Lab. Get in touch today and speak with any one of our team members.

PRINCIPAL INVESTIGATOR

TEAM

COLLABORATORS

DR. MICHELLE CARLSON, PHD

Principal Investigator

Dr. Carlson is a Professor in the Department of Mental Health at the Johns Hopkins Bloomberg School of Public Health (SPH) in Baltimore, MD, core faculty member in the Center on Aging and Health at the Johns Hopkins Medical Institutions, and holds joint appointments in the Johns Hopkins SPH Department of Epidemiology and the School of Nursing’s Center on Innovative Care in Aging.  Dr. Carlson examines the relationships between modifiable lifestyle and vascular risk factors and risk for age-related cognitive and functional declines and Alzheimer’s disease.  Dr. Carlson leads these investigations using both observational studies and randomized controlled trials, serving as Johns Hopkins PI of the Women’s Health and Aging Study (WHAS) II Cognition Study, field site PI of the Cardiovascular Health Study (CHS) now in its 30th year, site PI of the Ginkgo Evaluation of Memory (GEMS) trial through 2010, and project leader on the Baltimore Experience Corps Trial (BECT) program project through 2013, to evaluate the impact of senior service in elementary schools on older adults’ cognitive, functional, and brain health.  Recently, this work has expanded to incorporate neighborhood geospatial data with the goal of determining how environments help and hinder physically, socially and cognitively enriching activity in daily life.  These questions are important to promoting lifestyle activities that  help buffer the brain, and to delay dementia and mobility disability.

Dana Eldreth, PhD

deldret1@jhu.edu

Dr. Eldreth joined the Carlson Lab as a Research Associate faculty member in the Department of Mental Health in 2019. During her postdoc with Dr. Carlson, she worked on fMRI data analyses in the Brain Health Substudy nested within the larger Baltimore Experience Corps Trial. Her research career has encompassed understanding the contribution of executive cognitive function and emotional regulation in psychopathology across the lifespan, and as predictors and mediators of treatment outcomes to behavioral interventions. She has employed various imaging techniques (fMRI, MRI and O-15 H2O PET) to examine the underlying neurobiological substrates of these functions, as well as neuroplasticity in response to behavioral interventions. Over the past six years, Dr. Eldreth has been an entrepreneur in her family’s pottery business, creating art and negotiating international sales with companies in Japan. While this was a great opportunity, she realized that she wanted to pursue her research interests again to make a public health impact. What she enjoys most is spending time with her husband and 3-year old.

Breanna Crane, BS

bcrane4@jhu.edu

​Breanna Crane is a 3rd year PhD student in the Department of Mental Health and a trainee in the Epidemiology and Biostatistics of Aging Training Program. She received her B.S. in Physics with a double minor in Psychology and Mathematics in 2017 from the University of Alabama in Huntsville (UAH). Her key research interests involve cognitive aging and the role of modifiable risk factors (e.g., engagement in lifestyle activities, physical activity, air pollution) in potentially delaying or preventing age-related cognitive decline and Alzheimer’s disease. She is also interested in using geospatial data from wearable technology to explore the role of the built environment and its association with older adults’ cognitive and functional health.

RYAN ANDREWS, BS, PHD

Dr. Andrews completed his PhD from the Department of Mental Health at the Johns Hopkins Bloomberg School of Public Health. His substantive research interests include how to understand better the aging process (with a focus on cognitive aging) and how various interventions may delay or prevent negative consequences of aging, like dementia or physical frailty. He also works on methodological problems related to causal inference and how to estimate treatment effects properly in the context of non-randomized or missing data. Prior to coming to Johns Hopkins and the Carlson lab, he earned a Bachelor’s degree in Brain and Cognitive Sciences from the Massachusetts Institute of Technology (MIT)

THOMAS CHAN, PHD

Assistant Professor at California State University, Northridge

Dr. Thomas Chan received his PhD in Positive Developmental Psychology at Claremont Graduate University and is currently an Epidemiology & Biostatistics of Aging Post-Doctoral Fellow at the Johns Hopkins Bloomberg School of Public Health.Thomas is a developmental psychologist who investigates the factors that lead people to live happy, healthy, and fulfilling lives. Concurrently as a positive psychologist, he scientifically inquiries what goes right with life (e.g., human strengths, resiliency, and growth), alongside with, what goes wrong (e.g., psychopathologies, deficits, and traumas). Specifically, he examines the activities, supports, and interventions that promote psychosocial development and cognitive health. He uses a mixed methods approach (e.g., interviews, latent class analyses, observations) to evaluate—“For whom do these activities, supports, and interventions work for and under what conditions do they work?” He has worked with policymakers, municipal programs, work organizations, social entrepreneurs, and technology startups to provide a greater understanding to this overarching research question.

VIJAY VARMA, PHD

Postdoctoral IRTA Fellow at Laboratory of Behavioral Neuroscience, National Institute of Aging

Dr. Varma is a post-doctoral fellow at the National Institute of Aging. He received his PhD at Johns Hopkins Department of Mental Health with Dr. Carlson, and has worked with the entire study team on all aspects of the BECT and BHS including recruitment, evaluations, and data analysis. He is interested in exploring the relationship between physical activity and cognitive decline, and using novel devices (e.g. accelerometers, GPS, and Smartphones) to capture physical activity within urban environments. Vijay has extensive experience piloting and testing physical activity devices in community-dwelling older adults. Vjay received his Bachelor's degree in English and African American Studies from Duke University in 2005, and Master of Public Health degree from the Johns Hopkins Bloomberg School of Public Health in 2010.

YI-FANG CHUANG, MD PHD

Faculty, Department of Psychiatry & Cognitive Science, National Yang Ming University, Taipei

Yi-Fang received her MD from the National Taiwanese University and completed her residency in Psychiatry. She received her PhD in the Mental Health Department of the Johns Hopkins School of Public Health in September 2012. Her work with the Brain Health Study has focused primarily on the imaging analysis related to the MRI data obtained over the participants' annual visits. Yi-Fang has contributed greatly to our understanding of the existing relationships between changes in the brain, and presenting physical functioning, activity, and cognitive outcomes. She is currently serving as a post-doctoral fellow at the Hopkins Bayview Medical campus.

ABHIMANYU MAHAJAN, MBBS, MD

Neurology resident, Henry Ford Hospital, Michigan

Dr. Mahajan is a neurologist in Detroit, Michigan and is affiliated with Henry Ford Hospital. Abhimanyu compldted a Masters in Health Sciences, with a concentration in the Epidemiology of Aging. He received his Bachelor of Medicine, Bachelor of Surgery degree from T.N. Medical College in Mumbai, India, with career interest that lie in carrying out research in clinical neurology, movement disorders, aging, sleep, neurodenegeration and cognition.

JUAN LUIS MIRANDA JR.

Grants Coordinator

Juan completed his Master’s in Health Sciences student in the Department of Mental Health. He received his Bachelors of Science degree in Public Health from the University of California, Irvine. He has worked in laboratories researching questions using a mouse model of Multiple Sclerosis and in investigations regarding DNA re-replication in yeast cells. Juan’s current research interests are in cognitive health, aging, and sleep.

REGINA SHIH

Senior Behavioral and Social Scientist at RAND

Regina Shih conducts research in three areas: aging policy, environmental health, and behavioral health. She is currently leading an NIMHD R01 to test the effectiveness of a long-term services and supports program to improve access to home- and community-based services for dual-eligible beneficiaries, and its effects on health disparities. She is also co-leading a CDC project to help improve public health systems’ ability to increase resilience and emergency preparedness among older adults. Her behavioral health work focuses on understanding peer, family, school, and neighborhood contributors to disparities in adolescent substance use. Her environmental health and aging work has intersected with an NIA R01 to develop a national database of neighborhood environment indicators and to examine whether demographic, social, economic, and physical characteristics of neighborhoods influence cognitive aging and dementia risk. Dr. Shih has led a variety of other environmental health projects for both domestic and international clients including a National Institute of Occupational Safety and Health-funded community-based participatory research study to examine dispersion of chemicals following Hurricane Sandy and the resulting chemical exposures and health effects experienced by individuals.