Measuring Skin Electrical Potential With the Kelvin Probe: Minimizing Noise
The Scanning Kelvin Probe measures surface electrical potential without actually touching the skin. This is a pilot study to evaluate methods of minimizing noise during Scanning Kelvin Probe measurements. This project will focus specifically on noise arising from physical movement and environmental electrical field.
|Study Design:||Observational Model: Case-Only
Time Perspective: Cross-Sectional
|Official Title:||Measuring Skin Electrical Potential With the Kelvin Probe: Minimizing Noise|
- Variability in surface electrical potential measurements [ Time Frame: Within 24 hours of testing ] [ Designated as safety issue: No ]This study focuses on the ability of the Kelvin Probe to measure skin electrical potential. Because it does so without touching the skin, it is prone to noise - specifically physical movement and surrounding electrical noise. The variability in surface electrical potential is a way to determine how stable the measurements are. It can be determined immediately after testing - and will be used in data analyses (comparing across study volunteers) approximately 24 weeks after testing is complete.
|Study Start Date:||September 2010|
|Study Completion Date:||February 2011|
|Primary Completion Date:||February 2011 (Final data collection date for primary outcome measure)|
Other: Faraday cage, movement stabilization
The Faraday cage is a copper-mesh cage that surrounds the device and test site. It helps eliminate surrounding electrical noise. Movement stabilization will be achieved by placing a velcro strap over the arm to minimize random movements.