Glomerular latency coding in artificial olfaction

Jaber A. Yamani, Farid Boussaid, Amine Bermak, Dominique Martinez

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 Sn0 2 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.

Original languageEnglish
JournalFrontiers in Neuroengineering
Issue numberDECEMBER
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

Fingerprint

Smell
Olfactory Receptor Neurons
Neurons
Sensor arrays
Gases
Chemical sensors
Odors
Proteins
Olfactory Pathways
Dermatoglyphics
Processing
Automatic Data Processing
Ion implantation
Libraries
Brain
Metals
Chemical activation
Ions
Catalysts
Sensors

Keywords

  • Chemical sensing
  • Electronic nose
  • Glomerular convergence
  • Latency coding
  • Olfaction

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biophysics
  • Neuroscience (miscellaneous)

Cite this

Glomerular latency coding in artificial olfaction. / Yamani, Jaber A.; Boussaid, Farid; Bermak, Amine; Martinez, Dominique.

In: Frontiers in Neuroengineering, No. DECEMBER, 12.2011.

Research output: Contribution to journalArticle

Yamani, Jaber A. ; Boussaid, Farid ; Bermak, Amine ; Martinez, Dominique. / Glomerular latency coding in artificial olfaction. In: Frontiers in Neuroengineering. 2011 ; No. DECEMBER.
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