Sensorimotor transformation of signals stemming from the visual (eye position) and auditory (binaural information) peripheral organs into a common eye motor error signal was studied; as is observed in the deep layers of the colliculus superior that enables a head fixed monkey to direct its eyes towards an auditory target. By means of a computational model we explore how this transformation can be achieved by the responses of single neurons in the primate brainstem. Our audiooculomotor model, a feed-forward four-layer artificial neural network, was trained with back-propagation of error to assign connectivity in an architecture consistent with known physiology of the primate brainstem at both the level of input, and the output layers. The derived mathematical formalism is consistent with known physiological responses of brainstem neurons and does not require a topographical organization according to their preferred parameter values.
KeywordsHide Layer Superior Colliculus Inferior Colliculus Cochlear Nucleus Auditory Target
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- 1.Casseday, J.H. and Covey, E.: Central Auditory Pathways in Directional Hearing. Chapter 5. Yost, W.A. and Gourevitch, G. (Eds.) Directional Hearing. New York: Springer Verlag (1987) 108–145Google Scholar
- 6.Jones, W.P. and Hoskins, J.: Back-Propagation: a Generalized Delta Learning Rule. Byte 10 (1987) 155–162Google Scholar
- 7.Keller, E.L.: The brainstem. Chapter 9. Carpenter, R.H.S. (Ed.) Vision and Visual Dysfunction: Eye movements. 8 London: Macmillian Press (1991) 200–223Google Scholar
- 10.Sparks, D.L. and Groh, J.M.: The superior colliculus: A window for viewing issues in integrative neuroscience. Chapter 36. Gazzinga, M.S. (Ed) The cognitive neurosciences. Bradford book, Cambridge (1995) 565–584Google Scholar
- 13.Yin, T.C.T. and Kuwada, S.: Neural Mechanisms of Binaural Interaction. Chapter 9. Edelman G.M., Gall W.E. and Gowan W.M. (Eds.) Dynamic Aspects of Neocortical Function. New York: John Wiley and Sons (1984) 263–313Google Scholar