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.