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Behavioral Embryology

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San Francisco: Freeman, 1970. Pp. 111-137. Gottlieb, G. Development of species identification. An inquiry into the prenatal determinants of perception. Chicago: University of Chicago Press, 1971. (a) Gottlieb, G. Ontogenesis of sensory function in birds and mammals. In E. Tobach, L. R. Aronson, & E. ), The biopsychology of development. New York: Academic Press, 1971. Pp. 67-128. (b). -Y. Development of behavior in the duck embryo. Journal of Comparative and Physiological Psychology, 1965,59, 183-188.

CONTACT GUIDANCE HYPOTHESIS Early in the history of tissue culture work, it was noted that cells did not grow or migrate unless they made contact with a solid body, such as the coverslip, the fibrin net, fibers immersed in fluid, or the surface film of the culture medium (Harrison, 1914). On the basis of these early observations, Weiss (1934) put forth the hypothesis that the outgrowth of neural fibers is oriented by the lines laid down by tensions in the ultrastructure of the medium. These tensions represent the physical fields of force present in the medium, and they establish directional vectors for growth.

2. New York: Academic Press, 1965. Pp. 373^55. Crain, S. M. Bornstein, M. , & Peterson, E. R. Development of functional organization in cultured embryonic CNS tissues during chronic exposure to agents which prevent bioelectric activity. In L. Jilek & S. ), Ontogenesis of the brain. Prague: Charles University Press, 1968. Pp. 19-25. Dews, P. , & Wiesel, T. N. Consequences of monocular deprivation on visual behavior in kittens. Journal of Physiology (London), 1970, 206, 437-455. Dimond, S. J. Effects of photic stimulation before hatching on the development of fear in chicks.

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