Self-organization in the olfactory system: one shot odor recognition in insects

Nowotny, Thomas, Huerta, Ramon, Abarbanel, Henry D I and Rabinovich, Mikhail I (2005) Self-organization in the olfactory system: one shot odor recognition in insects. Biological Cybernetics, 93 (6). pp. 436-446. ISSN 1432-0770

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Abstract

We show in a model of spiking neurons that synaptic plasticity in the mushroom bodies in combination with the general fan-in, fan-out properties of the early processing layers of the olfactory system might be sufficient to account for its efficient recognition of odors. For a large variety of initial conditions the model system consistently finds a working solution without any fine-tuning, and is, therefore, inherently robust. We demonstrate that gain control through the known feedforward inhibition of lateral horn interneurons increases the capacity of the system but is not essential for its general function. We also predict an upper limit for the number of odor classes Drosophila can discriminate based on the number and connectivity of its olfactory neurons.

Item Type: Article
Keywords: Olfaction, pattern recognition, synaptic convergence, information coding, fan-in, fan-out
Schools and Departments: School of Engineering and Informatics > Informatics
School of Life Sciences > Biology and Environmental Science
Subjects: Q Science > QA Mathematics > QA0075 Electronic computers. Computer science
Q Science > QP Physiology
Depositing User: Thomas Nowotny
Date Deposited: 07 Mar 2008
Last Modified: 07 Mar 2017 10:36
URI: http://sro.sussex.ac.uk/id/eprint/1552
Google Scholar:27 Citations

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