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Morphological Basis of Information Processing in the Olfactory Bulb

  • N. Halasz
Conference paper
Part of the NATO ASI Series book series (volume 39)

Abstract

A high diversity of odorous stimulants exists in our environment, some ofwhich can reach the olfactory organ where they may act simultaneously. Although a large variety of molecular receptors are beleived to be localizedon the receptive sites of the primary olfactory neurons, only a few may be essential for the detection of certain odorants. As regards morphological techniques used at the cellular level, subtypes of receptor cells are not sufficient to account for detection of the number of odorants which can have biological significance. According to our present knowledge, higher stations of the olfactory pathway must contribute to a large extent in the precise discrimination of the odorants. It seems very likely that brain regions closer to the sensory receptors may contribute to signal processing with a higher degree of specificity since more central areas have an increasing number/density of other afferents from other systems. Consequently, it is very probable that the main olfactory bulb (OB) plays a significant role in providing a structural and neurochemical basis for the discriminatory processing of olfactory stimuli.

Keywords

Granule Cell Olfactory Bulb Granule Cell Layer Olfactory Nerve Mitral Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbrevitions used in text

ACh

acetylcholine

DA

dopamine

EM

electron microscope

EPL

external plexiform layer

GABA

gamma-aminobutyric acid

GCL

granule cell layer

GL

glomerular layer

5-HT

serotonin

IPL

internal plexiform layer

MCL

mitral cell layer

ONL

olfactory nerve layer

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • N. Halasz
    • 1
  1. 1.Institute of BiophyicsBiological Research Center of the Hungarian Academy of SciencesHungary

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