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Olfactory Bulb: Synaptic Organization

  1. Graeme Lowe

Published Online: 21 DEC 2007

DOI: 10.1002/9780470015902.a0020289



How to Cite

Lowe, G. 2007. Olfactory Bulb: Synaptic Organization. eLS. .

Author Information

  1. Monell Chemical Senses Center Philadelphia, Pennsylvania, USA

Publication History

  1. Published Online: 21 DEC 2007

This is not the most recent version of the article. View current version (15 MAY 2013)


Chemosensory information transduced by olfactory receptors in the periphery is mapped into a two dimensional array of glomeruli in the olfactory bulb, creating an orderly spatial code of odour identity. In the bulb, local interneurons implement multiple layers of recurrent and lateral inhibition both within and across glomeruli. These synaptic operations can rescale, filter and modulate neural activity patterns of principal neurons, dynamically modifying odour representations being relayed to higher cortical centres.


  • olfactory bulb;
  • glomeruli;
  • dendrodendritic