... Liaison Office, Bonn, ‘Bonn Center’, HI-1104, Bundeskanzlerplatz 2-10, 5300 Bonn 1, Germany. 2 11 1992 © 1993 by Company of Biologists 1993 Paramecium caudatum chemotaxis chemoaccumulation ciliary activity By employing a T-maze assay system, Van Houten and colleagues...

... and reversed beating for backward swimming, we identified another cyclic and two noncyclic states of ciliary activity. Intermediate beating was found during the transition from reversed beating to normal beating. One of the noncyclic states, the upright-inactive state, was found only after reversed beating...