1 Representation of horizontal head - on - body position in the primate superior 2 colliculus 3 4 5

1 Representation of horizontal head-on-body position in the primate superior 2 colliculus 3 4 5 Benjamin Nagy, Brian D. Corneil 6 7 CIHR Group in Action and Perception, 8 Graduate Program in Neuroscience 9 Departments of Physiology & Pharmacology and Psychology, 10 University of Western Ontario, 11 London, Ontario, Canada N6A 5C1 12 13 14 Running head: Head position gain fields in the superior colliculus 15 16 17 Words in abstract: 249 18 Number of pages: 54 19 Number of figures: 10 20 Number of Tables: 3 21 22 23 Correspondence should be addressed to: 24 Brian D. Corneil, Centre for Brain and Mind, 25 Robarts Research Institute, London, Ontario, Canada N6A 5K8. 26 (519) 663-5777, xt 34132. FAX: (519) 663-3193. E-mail: [email protected] 27 28 29 Acknowledgements: We thank Dr. Paul Gribble for advice on the bootstrap and non30 linear analyses used in this manuscript, Kevin Barker and Tania Admans for outstanding 31 technical and animal husbandry assistance respectively. This work was supported by an 32 operating grant from the Canadian Institutes of Health Research (CIHR) to BDC (MOP 33 64202), a Career Development Award from the Human Frontier Science Program to 34 BDC, a CIHR Group Grant, and infrastructure support from the Canadian Foundation for 35 Innovation and the Ontario Innovation Trust. BDC is a CIHR New Investigator. 36 37 38