Phase-Locked Loop Measurement of Sarcomere Length with High Time Resolution
- 1 June 1982
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. BME-29 (6), 463-466
- https://doi.org/10.1109/tbme.1982.324975
Abstract
A method for making high-speed measurements of sarcomere length directly from the muscle striation image is presented. A phase-locked loop is used with a self-scanned photodiode array to measure the spatial frequency of the striation pattern. Computation circuitry converts frequency to sarcomere length. The sarcomere length output has a resolution better than 2 nm at a sample rate of once every 250μs.Keywords
This publication has 7 references indexed in Scilit:
- Stepwise Sarcomere Shortening: Analysis by High-Speed CinemicrographyScience, 1981
- Sarcomere distribution patterns in single cardiac cellsBiophysical Journal, 1981
- On-Line Measurement of Sarcomere Length from Diffraction Patterns in MuscleIEEE Transactions on Biomedical Engineering, 1979
- A diffractometer using a lateral effect photodiode for the rapid determination of sarcomere length changes in cross-striated musclePflügers Archiv - European Journal of Physiology, 1978
- Dual-channel diffractometer utilizing linear image sensor charge-coupled devicesReview of Scientific Instruments, 1976
- Myocardial sarcomere dynamics during isometric contraction.The Journal of Physiology, 1975
- Optical Diffraction Studies of Muscle FibersBiophysical Journal, 1973