Learning classification in the olfactory system of insects

Huerta, Ramón, Nowotny, Thomas, Garcia-Sanchez, Marta, Abarbanel, H D I and Rabinovich, M I (2004) Learning classification in the olfactory system of insects. Neural Computation, 16 (8). pp. 1601-1640. ISSN 0899-7667

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We propose a theoretical framework for odor classification in the olfactory system of insects. The classification task is accomplished in two steps. The first is a transformation from the antennal lobe to the intrinsic Kenyon cells in the mushroom body. This transformation into a higher-dimensional space is an injective function and can be implemented without any type of learning at the synaptic connections. In the second step, the encoded odors in the intrinsic Kenyon cells are linearly classified in the mushroom body lobes. The neurons that perform this linear classification are equivalent to hyperplanes whose connections are tuned by local Hebbian learning and by competition due to mutual inhibition. We calculate the range of values of activity and size fo the network required to achieve efficient classification within this scheme in insect olfaction. We are able to demonstrate that biologically plausible control mechanisms can accomplish efficient classification of odors.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Depositing User: Thomas Nowotny
Date Deposited: 06 Feb 2012 18:40
Last Modified: 27 Mar 2012 09:57
URI: http://sro.sussex.ac.uk/id/eprint/17685
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