Substantia Nigra Stimulation Influences Monkey Superior Colliculus Neuronal Activity Bilaterally Running Head: Basal ganglia stimulation and superior colliculus

Acknowledgments: This work was supported by the National Institutes of Health EY13692, and the Esther A. and Joseph Klingenstein Foundation (MAB). We also acknowledge the support of NCRR P51 RR000167 to the Wisconsin National Primate Research Center. We are grateful for the assistance of Dr. Xiaobing Li, Byounghoon Kim and Dr. Xu Yang for assistance with the data collection and Byounghoon Kim for Matlab code. We also thank Tiffany J.G. Day for participating in preliminary data collection and analysis and the Parkinson Disease Foundation for funding TJGD’s summer student fellowship. We also thank the anonymous reviewers for their helpful comments on the manuscript. Page 1 of 60 Articles in PresS. J Neurophysiol (June 25, 2008). doi:10.1152/jn.01043.2007