Fig. 6. Probability of eliciting C-starts from sham-operated control and experimental goldfish to a vibratory stimulus over six 25-day postoperative intervals (T1-T6). The mean probability and S.D. are shown for experimental fish that recovered C-starts and for eight sham-operated control fish. The first experimental responses occurred in two fish between 51 and 75 days postoperatively. C-starts could be elicited from 11 of the 12 fish by 150 dayspostoperatively. One other fish regained C-starts on the 190th postoperative day (not shown).