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An active feedback system for isotonic studies of smooth muscle
P J Sabourin1, Y J Kingma, K L Bowes
1Surgical Medical Research Institute, University of Alberta, Edmonton, Canada.
IEEE Transactions on Bio-Medical Engineering
|June 1, 1991
Abstract:
A feedback system used to perform isotonic studies of smooth muscle is presented. This system is capable of applying a constant force to muscle samples regardless of their contractile activities. The force applied to the tissue is controlled using a proportional integral control system that drives a linear motor. The device is integrated into a sucrose gap tissue bath apparatus where measurements of displacement and electrical activity are also possible. The frequency of canine colonic smooth-muscle electrical oscillations is positively related to applied force.