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Olfactory perception and olfactory imagery: a multidimensional analysis

M Carrasco1, J B Ridout

  • 1Department of Psychology, Wesleyan University, Middletown, Connecticut 06459-0408.

Journal of Experimental Psychology. Human Perception and Performance
|April 1, 1993
PubMed
Summary
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This study provides evidence for olfactory imagery, finding that imagined and perceived odors share similar underlying dimensions like fruitiness and strength. This suggests a mental system for smell exists.

Area of Science:

  • Psychology
  • Neuroscience
  • Sensory Perception

Background:

  • The existence of a mental imagery system for olfaction remains debated.
  • The fundamental dimensions of odor perception are not well understood.

Purpose of the Study:

  • To investigate whether olfactory imagery exists.
  • To identify the dimensions underlying odor perception and imagery.

Main Methods:

  • Two experiments were conducted with undergraduate participants.
  • Participants rated the similarity of 16 common odorants, either through direct perception (scratch and sniff) or olfactory imagery.
  • Multidimensional scaling was used to analyze the similarity ratings.

Main Results:

Related Experiment Videos

  • Analysis revealed that three-dimensional solutions effectively represented the data for both perceived and imagined odors.
  • Similar stimulus dimensions, including fruitiness, strength, and familiarity, were identified for both perception and imagery.
  • The psychological spaces generated from perceived and imagined odors showed comparable structures.

    • Conclusions:

    • The findings suggest that a system of olfactory imagery exists.
    • Similar dimensions underpin both the perception and imagination of odors, supporting a unified sensory processing model.