An active feedback system for isotonic studies of smooth muscle

Author

Sabourin, Paul J. ; Kingma, Y.Jack ; Bowes, Kenneth L.

Author_Institution

Dept. of Electr. Eng. & Surg., Alberta Univ., Edmonton, Alta., Canada

Volume

38

Issue

6

fYear

1991

fDate

6/1/1991 12:00:00 AM

Firstpage

614

Lastpage

616

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 was found to be positively related to applied force.

Keywords

bioelectric potentials; biological techniques and instruments; biomechanics; feedback; muscle; active feedback system; canine colonic smooth-muscle electrical oscillations; constant force; electrical activity; isotonic studies; linear motor; muscle samples; proportional integral control system; sucrose gap tissue bath apparatus; Control systems; Displacement measurement; Electric variables measurement; Feedback; Force control; Frequency; Muscles; Pi control; Proportional control; Sugar; Animals; Colon; Dogs; Feedback; Isotonic Contraction; Muscle, Smooth; Reference Values;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.81588

Filename

81588