Chemosensory processing in a spiking model of the olfactory bulb: Chemotopic convergence and center surround inhibition Conference Paper uri icon


  • This paper presents a neuromorphic model of two olfactory signalprocessing primitives: chemotopic convergence of olfactory receptor neurons, and center on-off surround lateral inhibition in the olfactory bulb. A self-organizing model of receptor convergence onto glomeruli is used to generate a spatially organized map, an olfactory image. This map serves as input to a lattice of spiking neurons with lateral connections. The dynamics of this recurrent network transforms the initial olfactory image into a spatio-temporal pattern that evolves and stabilizes into odor- And intensity-coding attractors. The model is validated using experimental data from an array of temperature-modulated gas sensors. Our results are consistent with recent neurobiological findings on the antennal lobe of the honeybee and the locust.

published proceedings

  • Advances in Neural Information Processing Systems

author list (cited authors)

  • Raman, B., & Gutierrez-Osuna, R.

complete list of authors

  • Raman, B||Gutierrez-Osuna, R

publication date

  • January 2005