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Related Experiment Videos

Assessing olfactory performance in an Old World primate, Macaca nemestrina

F Hübener1, M Laska

  • 1Institut für Medizinische Psychologie, Ludwig-Maximilians-Universität, München, Germany.

Physiology & Behavior
|October 7, 1998
PubMed
Summary

This study adapted an operant conditioning task to assess olfactory performance in pigtail macaques (Macaca nemestrina). The findings show macaques can discriminate odors, transfer learning, and maintain olfactory sensitivity, enabling interspecific comparisons.

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Area of Science:

  • Primate Olfaction
  • Comparative Psychology
  • Behavioral Neuroscience

Background:

  • Assessing primate olfactory capabilities is crucial for understanding sensory processing.
  • Previous methods were limited in interspecific comparisons.
  • Operant conditioning offers a standardized approach to study olfactory behavior.

Purpose of the Study:

  • To adapt an operant conditioning paradigm for assessing olfactory performance in pigtail macaques (Macaca nemestrina).
  • To enable valid interspecific comparisons of olfactory abilities between primate species.
  • To investigate olfactory sensitivity and learning in macaques.

Main Methods:

  • An adapted operant conditioning paradigm simulating olfactory-guided foraging.
  • Multiple discrimination of simultaneously presented odor stimuli using odorized paper strips.

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  • Assessing learning, stimulus generalization, and odor memory over time.

    • Main Results:

    • Pigtail macaques successfully learned to discriminate objects based on odor cues.
    • Macaca nemestrina demonstrated rapid transfer to new stimuli and retained odor memory after a 3-week break.
    • The adapted method provided reliable measures of olfactory sensitivity, comparable to squirrel monkeys (Saimiri sciureus).

    Conclusions:

    • The adapted operant conditioning paradigm is effective for evaluating primate olfactory performance.
    • Pigtail macaques exhibit robust olfactory learning, discrimination, and memory capabilities.
    • This study facilitates interspecific comparisons of olfactory function between Old and New World primates.