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Related Experiment Videos

Olfactory sensitivity for aliphatic aldehydes in CD-1 mice.

Matthias Laska1, Dipa Joshi, Gordon M Shepherd

  • 1Department of Neurobiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, USA. Matthias.Laska@med.uni-muenchen.de

Behavioural Brain Research
|October 29, 2005
PubMed
Summary

CD-1 mice exhibit high olfactory sensitivity to aliphatic aldehydes, detecting concentrations below 4 parts per billion. Their sensitivity surpasses most mammals and is not linked to carbon chain length or molecular weight.

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Area of Science:

  • Neuroscience
  • Olfactory system research
  • Mammalian sensory perception

Background:

  • Olfactory sensitivity varies significantly across mammalian species.
  • Aliphatic aldehydes are common odorants found in plant environments.
  • Understanding olfactory detection thresholds is crucial for olfactory system studies.

Purpose of the Study:

  • To investigate the olfactory sensitivity of CD-1 mice to a homologous series of aliphatic aldehydes.
  • To determine the detection thresholds for various aldehydes and their relationship with chemical properties.
  • To compare mouse olfactory sensitivity to that of other mammalian species.

Main Methods:

  • Utilized a conditioning paradigm to assess olfactory detection.
  • Tested sensitivity to n-butanal through n-nonanal across a range of concentrations.

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  • Measured detection thresholds in parts per billion (ppb) and parts per trillion (ppt).

    • Main Results:

    • CD-1 mice detected concentrations below 4 ppb for all tested aldehydes.
    • Specific aldehydes were detected below 40 ppt by the best-scoring mice.
    • Olfactory sensitivity was higher than in most other mammals and showed no correlation with carbon chain length or molecular weight.

    Conclusions:

    • CD-1 mice possess highly developed olfactory sensitivity to aliphatic aldehydes.
    • Sensitivity is not directly correlated with molecular weight or carbon chain length.
    • Findings inform stimulus concentration choices for olfactory system research in mice.