Who We Are

Executive Leadership

Jeffrey Kaye

Jeffrey Kaye, M.D., is the Layton Endowed Professor of Neurology and Biomedical Engineering at Oregon Health & Science University. He is the director of ORCATECH and director of the NIA - Layton Aging and Alzheimer’s Disease Center. Dr. Kaye’s research has focused over the past two decades on understanding healthy aging using a variety of approaches ranging across the fields of genetics, neuroimaging, physiology and continuous activity monitoring. He leads several longitudinal studies of aging including the ongoing Oregon Brain Aging Study, the Intelligent Systems for Detection of Aging Changes (ISAAC) study and the ORCATECH Living Laboratory. The latter studies use pervasive remote sensing and computing technologies for continuous assessment of health and function among older adults in their homes. Recently, Dr. Kaye received a NIH award to study how real time in-home passively assessed activities (“Ambient Independence Measures” or AIMs) may be used to prevent transitions to higher levels of care. Also recently, Dr. Kaye has begun a new NIH funded Canadian, US, and UK program project in collaboration with three other principal investigators to pursue the “Integrated Analysis of Longitudinal Studies of Aging” (IALSA). IALSA seeks to create a common international harmonization platform for longitudinal studies of aging in order to advance integrative, interdisciplinary, and cross national approaches to research on aging, cognition, personality, and health. Dr. Kaye has received the Charles Dolan Hatfield Research Award for his work. He is listed in Best Doctors in America. He serves on many national and international panels and review boards in the fields of geriatrics, neurology and technology including as a commissioner for the Center for Aging Services and Technology (CAST), Chair of the International Society to Advance Alzheimer’s Research and Treatment (ISTAART), a member of the Advisory Board of AgeTech West, and on the Leadership Council of the Network on Environment, Services and Technologies for the American Society on Aging. He is an author of over 300 scientific publications and holds several major grant awards from federal agencies, national foundations and industrial sponsors.

Judith Kornfeld

Judith Kornfeld, M.B.A., is the Chief Business and Operations Officer of ORCATECH. Through building worldwide strategic collaborations and alliances while positioning Intellectual Property assets and leveraging products in development, Ms. Kornfeld specializes in bringing innovative medical technologies to prosper in the medical industry. Prior to joining ORCATECH she assumed executive business development positions of emerging medical technological companies in the specialty pharmaceuticals and medical device industries. Recently, Ms. Kornfeld held the position VP of Business Development of TransPharma Medical, a company focused on developing pharmaceutical products based on breakthrough proprietary transdermal drug-delivery technology. Ms. Kornfeld holds a bachelor's degree in life sciences and an M.B.A., as well as an academic background in electrical engineering.

Tracy Zitzelberger

Tracy Zitzelberger, M.P.H., is a research associate with ORCATECH investigating the use of ubiquitous, unobtrusive technologies for assessment of elders in their homes and as a means of maintaining independence. Ms. Zitzelberger was graduated from the Ohio State University with a Bachelor of Arts in Women’s Studies and began her research career recruiting for the NIH Women’s Health Initiative at The Ohio State University Medical Center. She moved to Portland in 2000 to work with the Layton Aging & Alzheimer’s Disease Center at Oregon Health & Science University and directed the Dementia Prevention Study, a primary prevention trial of Gingko biloba in healthy seniors over age 85. She received her Master of Public Health in Health Administration and Policy from Portland State University in 2003.


Katherine Wild

Kathy Wild, Ph.D., is an ORCATECH investigator with a research focus on elder care and healthcare utilization transitions. Dr. Wild is an associate professor in the OHSU Department of Neurology with special interests is in cognitive impairment and dementia. She received her doctorate in 1988 from the Ferkauf Graduate School of Psychology - Yeshiva University, New York. She has been collaborating with other members of ORCATECH in research on the use of in-home technology to prolong safe and independent living. Other research interests include computer-based assessment to detect early changes in cognition, and impaired insight as it relates to decision making in persons with mild cognitive impairment and dementia.

Hiroko Dodge

Hiroko Dodge, Ph.D., is an ORCATECH investigator who joined the NIA-funded Oregon Alzheimer's Disease Center (OADC) at OHSU as a data core director in 2008. Dr. Dodge’s work focuses on refining statistical methods which allow us to capture the decline leading to dementia at the earliest stage of the disease, examining lifestyle and environmental factors leading to healthy cognitive aging, and conducting behavioral prevention trials against cognitive decline. She is currently examining whether simulations through social interactions could improve cognitive functioning.

Chad Hagen

Chad Hagen, M.D., is an biomedical engineering investigator for ORCATECH. Dr. Hagen's research focus has been improvement in the definition and detection of sleep disorders with an emphasis on sleep apnea and sleep fragmenting disorders. There is heightened need for less expensive and non-obtrusive technology for the diagnosis and treatment of sleep disorders. Over the last four years, his group has developed technology for the unobtrusive assessment of sleep apnea both in the laboratory and in the comfort of patients’ own homes. Research collaboration with biomedical engineers combined with his work as clinician and director of a busy academic sleep disorders program with thousands of sleep patient encounters per year puts him in a unique position to aid the translation of sleep research to the point of care.

Daniel Austin, Ph.D.

Daniel Austin, Ph.D., is a research instructor in the Department of Neurology. Dr. Austin received the B.S. degree in Electrical Engineering Technology from the Oregon Institute of Technology in 2006, the M.S. degree in Electrical Engineering from the University of Southern California in 2008, and the Ph.D. degree in Biomedical Engineering from the Oregon Health & Science University in 2013. His current research is in the general area of behavior modeling for health care applications using various types of computational modeling (nonlinear regression, signal processing, machine learning, etc.) with a specific emphasis on fusing multiple data streams captured from in-home sensor networks into a cohesive modeling framework to measure and predict cognitive, physical, and functional decline.  A list of Daniel's publications can be found on Google Scholar.

Adri Seelye

Adriana Seelye, Ph.D., is a NIA post-doctoral research fellow in clinical neuropsychology within ORCATECH and the Layton Aging and Alzheimer’s disease Research Center. She received her Ph.D. in 2013 from Washington State University. Her research focus is in using unobtrusive in-home monitoring of daily activities to develop novel measures for the assessment and tracking of early, subtle changes in daily cognition and function in aging and mild cognitive impairment.

Johanna Petersen

Johanna Austin, Ph.D., is a post-doctoral research fellow in the Department of Neurology. She received her PhD in Biomedical Engineering in 2015 for her work developing models and algorithms to assess in-home activities associated with loneliness and related behaviors. Her current research interests include unobtrusive, longitudinal measurement of in-home behavior with applications to healthcare. She is especially interested in developing techniques to assess the loneliness and depression levels of informal dementia caregivers, which will require the development and testing of devices and algorithms to distinguish the activities of multiple individuals living in the same home.

Life Lab Team

Nicole Larimer

Nicole Sharma leads the Life Lab team and manages the ORCATECH cohort. Ms. Sharma graduated from Pomona College with a degree in Cognitive Science, where she also conducted memory research and learned about research data analysis at the UCSD Alzheimer’s Disease Cooperative Study.

Thomas Riley

Thomas Riley is ORCATECH's technical lead, managing both frontend and backend development, testing of new sensors and implementing quality assurance protocols for collected data. He uses experience implementing these sensors and subject interactions to continue improving ORCATECH’s sensor suite. Mr. Riley is a graduate of the University of Portland with a degree in physics.

Molly Bwman

Molly Bowman, M.S.,is a research associate for ORCATECH and coordinates clinical elements of ongoing research studies. Ms. Bowman has an undergraduate degree in psychology from Middlebury College and an M.S. in clinical mental health counseling from Portland State University.

Nora Mattek

Nora Mattek, M.P.H., is a research statistician in ORCATECH. Her primary focus is analyzing the activity data collected from our Intelligent Systems for Assessment of Aging Changes Study (ISAAC). ISAAC is a unique and collaborative study that is the first large-scale project of its kind to study continuous assessment technologies in community homes. This five year study, funded by an NIH Biomedical Research Partnership Grant, is a collaborative effort among medical and engineering faculty and academic and industry partners.

Sylvia Salazar

Sylvia Salazar, N.D., has worked at OHSU/ORCATECH providing clinical assessments for several aging and technology studies since 2007. Ms. Salazar received her Bachelor of Science in biology from Montana State University in Bozeman, Montana, before attending the National College of Natural Medicine in Portland, Oregon, where she earned her degree in naturopathic medicine.

Mattie Gregor

Mattie Gregor, CCRP, is a research coordinator with ORCATECH. She facilitates subject recruitment as well as trial budgeting and contracting, and also works as a clinical research coordinator and regulatory specialist for the OHSU Layton Aging & Alzheimer's Disease Center clinical trials program. She holds a bachelor's degree in psychology from Swarthmore College and has a background in IT and cognitive research.


Colette Duncan

Colette Duncan is a research assistant with ORCATECH who administers the neuropsychological testing for ORCATECH study participants. Ms. Duncan holds a B.S. in business administration.

Graduate Students

Julia Leach

Julia Leach is a graduate student currently working to integrate a balance assessment system into ORCATECH’s in-home technological platform to extract frequent, longitudinal, objective measures of postural sway, both in elders who are cognitively intact and elders with mild cognitive impairment.