Summary
Spontaneous tension changes of isolated strips of guinea-pig portal vein were analysed using the time series analysis (evaluation of autocorrelation function and power spectra). The results indicated three typical power spectral maxima with frequencies of 0.01–0.03 Hz, 0.05–0.08 Hz and 0.09–0.2 Hz. These vascular smooth muscle oscillation components were compared with the vascular autooscillations of the isolated rat kidney and with the mechanical oscillations of the taenia coli which had been previously determined.
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This work was supported by Grant-TAG 229 of Scientific and Technical Research Council of Turkey (T.B.T.A.K.).
Varian, A. G. (Switzerland) supported this work with additional memory supply to our computer and with steady technical assistance.
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Başar, E., Eroglu, C. & Ungan, P. An analysis of portal vein spontaneous contractions. Pflugers Arch. 352, 135–143 (1974). https://doi.org/10.1007/BF00587512
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DOI: https://doi.org/10.1007/BF00587512