PMID: 13563808Jul 20, 1958Paper

Rhythmicity in the protoplasmic streaming of a slime mold, Physarum polycephalum. I. A statistical analysis of the electric potential rhythm

The Journal of General Physiology
U KISHIMOTO

Abstract

The electric potential difference (1 to 15 mv.) between two loci of the slime mold connected with a strand of protoplasm changes rhythmically with the same period (60 to 180 seconds) as that of the back and forth protoplasmic streaming along the strand. Generally some phase difference is observed between them. Periods of the electric potential rhythm show a Gaussian distribution. Amplitudes give a somewhat different distribution curve. Wave forms are not always simple harmonic ones, but are distorted more or less. However, auto-correlation analysis proves that there is a dominant rhythm of a nearly constant period which coincides with the mean period of the Gaussian distribution curve. Calculations made on an assumption that the electric potential rhythm is the result of many elementary rhythms (i.e., same periodicity, arbitrary phase angles) distributed throughout the plasmodium, give a satisfactory coincidence with the observed distribution for the amplitude. The predominance of a rhythm of a nearly constant periodicity suggests the existence of well organized interactions among components of a contractile protein network, the rhythmic deformation of which is supposed to be responsible for the protoplasmic streaming and for t...Continue Reading

Citations

Dec 1, 1968·Comparative Biochemistry and Physiology·D M MillerB C Abbott
Apr 1, 1976·The Journal of Cell Biology·A C Durham, E B Ridgway
Oct 6, 2014·Current Opinion in Biotechnology·Diego Barcena MenendezMark Isalan
Aug 8, 2014·Bio Systems·James G H WhitingAndrew Adamatzky
Jun 27, 1964·Lancet·C W WHITTYJ P FITZGIBBON
Jun 17, 2015·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·A Adamatzky
Feb 1, 2015·Bio Systems·James G H WhitingAndrew Adamatzky
Dec 17, 2014·Artificial Life·Andrew Adamatzky
May 20, 2018·Scientific Reports·Andrew Adamatzky

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