Development of ocularity domains and growth behaviour of axon terminals |
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Authors: | Ch von der Malsburg |
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Institution: | (1) Abteilung für Neurobiologie, Max-Planck-Institut für Biophysikalische Chemie, Göttingen, FRG |
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Abstract: | Ontogenetic development of ocularity domains — stripes, patches and layers in cortex, colliculus superior and lateral geniculate nucleus — is the result of organization that may either be intrinsic to the postsynaptic structure or induced to it by the afferents. A specific type of axonal growth behaviour that was recently proposed as a basis for ontogenetic development of retinotopy is sufficient to account also for ocularity domains. No intrinsic organization in the postsynaptic structure is required. The latter merely serves as a propagating medium for markers carried by the presynaptic terminals. Computer simulations demonstrate the mechanism to be complete and consistent. |
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