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Olfactory Context Dependent Memory: Direct Presentation of Odorants
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Item-specific proactive interference in olfactory working memory.

Andrew Moss1, Christopher Miles1, Jane Elsley1

  • 1a Department of Psychology, Faculty of Science & Technology , Cognition and Cognitive Neuroscience Research Centre, Bournemouth University , Poole , UK.

Memory (Hove, England)
|August 29, 2017
PubMed
Summary
This summary is machine-generated.

Olfactory proactive interference (PI) occurs with verbalizable odors but not with hard-to-name ones. This suggests odor characteristics, not just modality, determine PI effects in memory.

Keywords:
Proactiveinterferencememorymodalityolfaction

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Sensory Perception

Background:

  • Proactive interference (PI) is a memory phenomenon where prior learning hinders new learning.
  • PI effects are well-documented for verbal and visual stimuli but less understood for olfactory stimuli.
  • The role of odor characteristics in PI is an open question.

Purpose of the Study:

  • To investigate item-specific olfactory proactive interference (PI) effects.
  • To compare olfactory PI with PI effects from verbal and non-verbal visual stimuli.
  • To determine if odor verbalizability influences PI.

Main Methods:

  • Utilized a sequential recent-probes task adapted for olfactory stimuli.
  • Compared PI effects for hard-to-name odors (Experiment 1) and verbalizable odors (Experiment 2).
  • Included experiments with words and faces as controls (Experiments 3 and 4).

Main Results:

  • No evidence of PI was found for hard-to-name odors.
  • Verbalizable odors demonstrated significant PI effects.
  • Performance was above chance, and serial position functions were similar across tasks.

Conclusions:

  • Olfactory PI is not a universal phenomenon and depends on odor characteristics.
  • Verbalizability is a key factor influencing olfactory PI, similar to verbal stimuli.
  • Findings highlight the importance of stimulus properties in cross-modal memory interference research.