In the article “Optical Imaging of Long-Term Depression in the Mouse Cerebellar Cortex In Vivo,” by Wangcai Gao, Robert L. Dunbar, Gang Chen, Kenneth C. Reinert, John Oberdick, and Timothy J. Ebner, which appeared on pages 1859–1866 of the March 1, 2003 issue, there is an error in Figure 4B. The line graph in Figure 4B was inadvertently replaced by a copy of Figure 1C during the editing of proofs. The corrected Figure 4 and legend are shown below.
Two additional control experiments. Average, aligned beam intensity profile (A) and time course of the normalized optical signal (B) in normal mice in which only the inferior olive was stimulated instead of the conjunctive stimulation. Data are from four animals. There was no significant change in the beam intensity after conjunctive stimulation either in the region in which parallel fiber beam and climbing fiber band overlap (overlapping) or in the neighboring regions (non-overlapping). C, Average, aligned beam intensity profile in the mGluR4 knock-out mice and its time course (D). Data are from four animals. After conjunctive stimulation, the normalized optical signal in the interaction region was reduced throughout the 60 min observation period. There was no change in the response in the non-interaction region. *p < 0.05 indicates a significant change relative to the baseline response (Duncan's test).
