Abstract
The Topology Representing Network (TRN) model is extended by using an activation dynamics which implicitly orders the neurons according to the distance from the input pattern. This allows to apply the same Hebbian learning method to the thalamo-cortical and cortico-cortical connections. The model proposed combines a process of diffusion (via the excitatory topologically organized connections) and a process of competitive distribution of activation which tends to sharpen the active map region. The dynamics is analyzed taking into account the excitatory nature of the majority of cortical synapses and the puzzling presence of long-range competition without long-range inhibition. The model is shown to be more consistent than TRN or other self-organizing paradigms with a number of neurophysiological facts.
Preview
Unable to display preview. Download preview PDF.
References
S. Amari. Dynamics of pattern formation in lateral-inhibition type neural fields. Biological Cybernetics, 27:77–87, 1977.
W.H. Calvin. Cortical columns, modules, and hebbian cell assembles. In M.A. Arbib, editor, The handbook of brain theory and neural networks, pages 269–272. MIT Press, Cambridge, MA, 1995.
C.D. Gilbert and T.N. Wiesel. Morphology and intracortical projections of functionally identified neurons in cat visual cortex. Nature, 280:120–125, 1979.
L.C. Katz and E.M. Callaway. Development of local circuits in mammalian visual cortex. Annual Review of Neuroscience, 15:31–56, 1992.
E. I. Knudsen, S. du Lac, and S.D. Esterly. Computational maps in the brain. Annual Review of Neuroscience, 10:41–65, 1987.
T. Kohonen. Self organizing formation of topologically correct feature maps. Biological Cybernetics, 43:59–69, 1982.
T. Martinetz and K. Schulten. Topology representing networks. Neural Networks, 7:507–522, 1994.
P. Morasso and V. Sanguineti. How the brain can discover the existence of external egocentric space. Neurocomputing, 12:289–310, 1996.
P. Morasso, V. Sanguineti, and G. Spada. Neocortical dynamics in sensorimotor control. In J. Mira Mira, editor, Proceedings of the International Conference on Brain Processes, Theories and Models, pages 503–512. MIT Press, Cambridge, Mass, USA, 1995.
A. Nicoll and C. Blakemore. Patterns of local connectivity in the neocortex. Neural Computation, 5:665–680, 1993.
J.A. Reggia, C.L. D'Autrechy, G.G. Sutton III, and M. Weinrich. A competitive distribution theory of neocortical dynamics. Neural Computation, 4:287–317, 1992.
V. Sanguineti, P. Morasso, and F. Frisone. Cortical maps of sensorimotor spaces. In P. Morasso and V. Sanguineti, editors, Self-organization, Computational Maps, and Motor Control, pages 1–36. Elsevier Science Publishers, Amsterdam, 1997.
H.D. Schwark and E.G. Jones. The distribution of intrinsic cortical axons in area 3b of cat primary somatosensory cortex. Experimental Brain Research, 78:501–513, 1989.
W. Singer. Development and plasticity of cortical processing architectures. Science, 270:758–764, 1995.
J. Sirosh, R. Mikkulainen, and Y. Choe. Lateral interactions in the cortex. Hypertext Book, http://www.cs.utexas.edu/users/nn/web-pubs/htmlbook96, 1996.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1997 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Frisone, F., Perico, L., Morasso, P.G. (1997). Extending the TRN model in a biologically plausible way. In: Gerstner, W., Germond, A., Hasler, M., Nicoud, JD. (eds) Artificial Neural Networks — ICANN'97. ICANN 1997. Lecture Notes in Computer Science, vol 1327. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0020156
Download citation
DOI: https://doi.org/10.1007/BFb0020156
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-63631-1
Online ISBN: 978-3-540-69620-9
eBook Packages: Springer Book Archive