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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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TITLE: Makings Sense of Sensors
ABSTRACT:
The crashing wave of activity tracking “wearables” opens up an opportunity to unveil previously hidden but pivotal signatures of disability and disease. To achieve this promise, the understanding, interpretation and analysis of complex multimodal data produced by such devices becomes crucial. The first part of my talk will provide an overview of the instruments that are available for real-time measurement of physical activity as well as a quick review of the strengths and limitations of current methods for measuring physical activity. In the second part, I will talk about analysis of data collected on 700+ subjects wearing an Actiheart device that collects minute-by-minute activity counts and heart rate for one week as a part of the Baltimore Longitudinal Study of Aging. I will discuss recent multilevel functional data approaches to separate and quantify the systematic and random circadian patterns of physical activity as functions of time of day, age, and gender in this population.
Brief Bio:
