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A Computer Simulation of Olfactory Cortex with Functional Implications for Storage and Retrieval of Olfactory Information

Wilson, Matthew A. and Bower, James M. (1988) A Computer Simulation of Olfactory Cortex with Functional Implications for Storage and Retrieval of Olfactory Information. In: Neural Information Processing Systems. American Institute of Physics , New York, NY, pp. 114-126. ISBN 0883185695.

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Based on anatomical and physiological data, we have developed a computer simulation of piriform (olfactory) cortex which is capable of reproducing spatial and temporal patterns of actual cortical activity under a variety of conditions. Using a simple Hebb-type learning rule in conjunction with the cortical dynamics which emerge from the anatomical and physiological organization of the model, the simulations are capable of establishing cortical representations for different input patterns. The basis of these representations lies in the interaction of sparsely distributed, highly divergent/convergent interconnections between modeled neurons. We have shown that different representations can be stored with minimal interference. and that following learning these representations are resistant to input degradation, allowing reconstruction of a representation following only a partial presentation of an original training stimulus. Further, we have demonstrated that the degree of overlap of cortical representations for different stimuli can also be modulated. For instance similar input patterns can be induced to generate distinct cortical representations (discrimination). while dissimilar inputs can be induced to generate overlapping representations (accommodation). Both features are presumably important in classifying olfactory stimuli.

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Additional Information:© American Institute of Physics 1988.
Record Number:CaltechAUTHORS:20160107-154534268
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63465
Deposited By: Kristin Buxton
Deposited On:19 Jan 2016 22:48
Last Modified:03 Oct 2019 09:28

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