Skip to Main content Skip to Navigation
New interface
Journal articles

Glomerular latency coding in artificial olfaction

Jaber Al Yamani 1 Farid Boussaid 1 Amine Bermak 2 Dominique Martinez 3 
3 CORTEX - Neuromimetic intelligence
Inria Nancy - Grand Est, LORIA - AIS - Department of Complex Systems, Artificial Intelligence & Robotics
Abstract : Sensory perception results from the way sensory information is subsequently transformed in the brain. Olfaction is a typical example in which odor representations undergo considerable changes as they pass from olfactory receptor neurons (ORNs) to second-order neurons. First, many ORNs expressing the same receptor protein yet presenting heterogeneous dose-response properties converge onto individually identifiable glomeruli. Second, onset latency of glomerular activation is believed to play a role in encoding odor quality and quantity in the context of fast information processing. Taking inspiration from the olfactory pathway, we designed a simple yet robust glomerular latency coding scheme for processing gas sensor data. The proposed bio-inspired approach was evaluated using an in-house SnO2 sensor array. Glomerular convergence was achieved by noting the possible analogy between receptor protein expressed in ORNs and metal catalyst used across the fabricated gas sensor array. Ion implantation was another technique used to account both for sensor heterogeneity and enhanced sensitivity. The response of the gas sensor array was mapped into glomerular latency patterns, whose rank order is concentration-invariant. Gas recognition was achieved by simply looking for a "match" within a library of spatio-temporal spike fingerprints. Because of its simplicity, this approach enables the integration of sensing and processing onto a single-chip.
Document type :
Journal articles
Complete list of metadata
Contributor : Dominique Martinez Connect in order to contact the contributor
Submitted on : Wednesday, January 4, 2012 - 1:14:17 PM
Last modification on : Friday, November 18, 2022 - 10:14:11 AM

Links full text




Jaber Al Yamani, Farid Boussaid, Amine Bermak, Dominique Martinez. Glomerular latency coding in artificial olfaction. Frontiers in neuroengineering, 2012, 4 (18), ⟨10.3389/fneng.2011.00018⟩. ⟨hal-00656455⟩



Record views