title: Analysis of biological rhythms using an interactive structured autoregressive modelling technique.
abstract: A method of spectral-type analysis for rhythmic biomedical data is presented based on autoregressive modelling techniques. The emphasis has been on portability between data-processing machines, so that the programmes are written in FORTRAN 4 for the ICL 1900 series computers. The programmes are structured in blocks allowing for simple alteration to an interactive mode allowing the calculation and display of pre-filtering stages, model coefficients, the pole-zero plot, residuals, AR frequency spectrum, FFT of raw and filtered data. The method works on a small number of cycles and gives a direct read out of significant spectral components.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003201:Computers; D004068:Digestive System Physiological Phenomena; D004285:Dogs; D004386:Duodenum / Q000502:physiology; D004594:Electrophysiology; D006801:Humans; D008322:Mammals; D008954:Models, Biological; D013270:Stomach / Q000502:physiology