High-speed video cinematographic demonstration of stalk and zooid contraction of Vorticella convallaria.

@article{Moriyama1998HighspeedVC,
  title={High-speed video cinematographic demonstration of stalk and zooid contraction of Vorticella convallaria.},
  author={Yasushi Moriyama and Shigeki Hiyama and Hidekazu Asai},
  journal={Biophysical journal},
  year={1998},
  volume={74 1},
  pages={
          487-91
        }
}
Stalk contraction and zooid contraction of living Vorticella convallaria were studied by high-speed video cinematography. Contraction was monitored at a speed of 9000 frames per second to study the contractile process in detail. Complete stalk contraction required approximately 9 ms. The maximal contraction velocity, 8.8 cm/s, was observed 2 ms after the start of contraction. We found that a twist appeared in the zooid during contraction. As this twist unwound, the zooid began to rotate like a… CONTINUE READING
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