NEXT TUES (5/2): Bruce McNaughton on Neural Networks for Spacial Representation in Hippocampus

[Mark Gluck]

            Stanford University Interdisciplinary Colloquium Series:
                   Adaptive Networks and their Applications

                      May 2nd (Tuesday, 3:30pm):

                           Room 380-380C

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   Hebb-Steinbuch-Marr Networks and the Role of Movement in Hippocampal
                   Representations of Spatial Relations

                         Bruce L. McNaughton

                         Dept. of Psychology
                        University of Colorado
                           Campus Box 345
                         Boulder, CO  80309

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                               Abstract

  Over 15 years ago, Marr proposed models for associative learning and 
pattern completion in specific brain regions. These models incorporated 
Hebb's postulate, the "learning matrix" concept of Steinbuch, recurrent 
excitation, and the assumptions that a few excitatory synapses are 
disproportionately powerful, and that inhibitory synapses divide 
postsynaptic excitation by the total input. These ideas provide a basis for 
understanding much of the circuitry and physiology of the hippocampus, and 
will be used to suggest how spatial relationships are coded there by forming 
conditional associations between location and movement representations 
originating in the inferotemporal and parietal cortical systems respectively. 

References:
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McNaughton, B. L.  & Morris R.G.M. (1988). Hippocampal synaptic enhancement and 
  information storage within a distributed memory system. Trends in Neurosci. 
  10:408-415.

McNaughton, B. L. & Nadel, L. (in press, 1989). Hebb-Marr networks and
  the neurobiological representation of action in space. To appear in 
  M. Gluck & D. Rumelhart (Eds.), Neuroscience and Connectionist
  Models, Erlbaum: Hillsdale, NJ


Additional Information:
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Location: Room 380-380C, which can be reached through the lower level
 between the Psychology and Mathematical Sciences buildings. 
Level: Technically oriented for persons working in related areas.
Mailing lists: To be added to the network mailing list, netmail to
 netlist at psych.stanford.edu with "addme" as your subject header.
 For additional information, contact Mark Gluck (gluck at psych.stanford.edu).