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Development of the Visual System. Lettvin, J.Y., Maturana, H.R., McCulloch, W.S. & Pitts, W.H. (1959) What the frog's eye tells the frog's brain. Proceedings of the Institute of Radio Engineers, 47, 1940-1951. Pomeranz, B. & Chung, S.H. (1970) Dendritic-tree anatomy codes
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Development of the Visual System
Lettvin, J.Y., Maturana, H.R., McCulloch, W.S. & Pitts, W.H. (1959) What the frog's eye tells the frog's brain. Proceedings of the Institute of Radio Engineers, 47, 1940-1951.
Pomeranz, B. & Chung, S.H. (1970) Dendritic-tree anatomy codes form-vision physiology in tadpole retina . Science, 170, 983-984
Retina LGN V1 - - - + + + - - - + + - - + - + + - Receptive Fields
Aggregate Pattern Feature Detection a b c d e f g a b c d e f g baseball 1 0 0 0 0 0 1 1 0 0 0 0 0 0 hot dog 1 0 0 1 0 0 0 0 1 0 0 0 0 0 grandma 0 1 1 0 1 1 0 0 0 1 0 0 0 0 apple pie 0 0 0 1 0 0 0 0 0 0 1 0 0 0 football 0 0 0 0 1 0 0 0 0 0 0 1 0 0 soccer ball 1 0 1 1 1 1 1 0 0 0 0 0 1 0 tennis ball 1 1 0 0 0 0 1 0 0 0 0 00 1
Aggregate Pattern Feature Detection a b c d e f g a b c d e f g baseball 1 0 0 0 0 0 1 1 0 0 0 0 0 0 hot dog 0 0 0 1 0 0 0 0 1 0 0 0 0 0 grandma 0 1 1 0 1 1 0 0 0 1 0 0 0 0 apple pie 0 0 0 1 0 0 0 0 0 0 1 0 0 0 football 0 0 0 0 1 0 0 0 0 0 0 1 0 0 soccer ball 1 0 1 1 1 1 0 0 0 0 0 1 0 tennis ball 1 1 0 0 0 0 1 0 0 0 0 00 1
How does this system come to be? I.e., what role does stimulation play in its maturation? Environment Dependent 1. induction 2. facilitation of rate Environment Expectant 3. enhancement of ultimate level 4. maintenance
Sharma, J. Angelucci, A. & Sur, M. (2000) Induction of visual orientation modules in auditory cortex. Nature, 404, 841-847.
cGMP Guanylyl cyclase NO NO synthase
Held, R. & Hein, A. (1963) Movement-produced stimulation in the development of visually –guided behavior. J. Comp. Physiol. Psych. 56, 872-876.
Tees, R.C., (1974) Effect of visual deprivation on development of depth perception in the rat. Journal of Comparative and Physiological Psychology, 86, 300-308.