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Fig. 16. Recordings from sint1 and sint2 during turning movements.
(A) A turning movement to the right was initiated by a tactile stimulus
applied to the left side of the body while recording from Rsint1
(upper trace) and Rsint2 (lower trace). (B) Activity in the same two
cells during a spontaneous turn to the right. A and B are from a whole animal
preparation that was allowed to crawl on a blade of seagrass during the
recording. Similar observations were made in each of 12 separate whole animal
experiments.