Michael Charles Dahl
The first research experience I had involved
testing the physiological electromagnetic properties of Ampullary Canals
of Lorenzini in bamboo sharks. The ampullary canals are neat little organs
that act like electromagnetic band pass filters. These act as a sort
of "sixth sense." Instead of dead people, these canals detect the electromagnetic
signals produced by the nerves of predators and prey. This project was
in conjunction with a experimental physics class I had at the
University of Puget Sound. I modeled the canal, then designed and built an apparatus
to test the voltage characteristics of the canal tissue in-vitro.
Christiansen BA, Silva MJ. The Effect of Varying Magnitudes of Whole-Body Vibration on Several Skeletal Sites in Mice. Ann Biomed Eng. 2006. 34(7):1149-56.
Dahl MC, Rouleau JP, Papadopoulos S, Nuckley DJ, Ching RP . Dynamic characteristics of the intact, fused, and prosthetic-replaced cervical disk. Journal of Biomechanical Engineering. 2006. Dec;128(6):809-14.
A side project I did in collaboration with Dr. Sundar Srinivasan incorporated modeling bone formation using a technique called agent based modeling. This is a unique form of computational modeling that examines emergent behavior in a system defined by basic parameters. It allows the researcher to examine the parameter space to determine which characteristics and variables are the most prominent in a system, which allows for more focused empirical research.
A couple neurosurgeons from Harborview Medical Center contacted me about developing a study to determine the difference between various techniques of removing equipment from football players with cervical spine injuries. This was a fun project and the research was just submitted to the Journal of Applied Biomechanics.
Now for my doctorate thesis I am looking at the Agility Total Ankle Prosthesis. I am testing the efficacy of a device I developed that can measure the amount of implant osteointegration non-invasively. I am almost finished with the clinical testing and hopefully will defend in March. As a side project, I am looking at some wear patterns in the prosthesis polyethylene itself using Atomic Force Microscopy.