Formation of olfactory memories mediated by nitric oxide
Article Abstract:
A study of olfactory learning in sheep has indicated that nitric oxide plays a significant role in the identification of odor. Within two hours after giving birth, sheep recognize the smell of their offspring. This is because nitric acid and another chemical are formed immediately after birth. The study found that once olfactory memory has been formed, the inhibition of nitric oxide and other related chemicals does not prevent its recall or the neuro-chemical release triggered by learned lamb smell.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Impaired odour discrimination on desynchronization of odour-encoding neural assemblies
Article Abstract:
Research shows that the oscillatory synchronization of assemblies of projection neurons exist in honeybees to stimulate odour encoding behaviour. The Gamma-aminobutyric acid receptor antagonist picrotoxin prevents synchronization, making it impossible for odour discrimination to take place through fine sensory functionality. The inhibitory effects of picrotoxin are shown, together with honeybee neuronal responses.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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The nose leads the eye
Article Abstract:
An adaption mechanism which supports desensitization to strong stimuli has been observed in newt olfactory receptor cells. The adapting stimulus has been found to be capable of shifting the dose-response relationship to higher odorant concentrations. Adaptation is additionally found to have little effect on the decay rate of the response to odorants.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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