Long-term memory for odors: influences of familiarity and identification across 64 days

Chemical Senses
Stina Cornell KärnekullMaria Larsson

Abstract

Few studies have investigated long-term odor recognition memory, although some early observations suggested that the forgetting rate of olfactory representations is slower than for other sensory modalities. This study investigated recognition memory across 64 days for high and low familiar odors and faces. Memory was assessed in 83 young participants at 4 occasions; immediate, 4, 16, and 64 days after encoding. The results indicated significant forgetting for odors and faces across the 64 days. The forgetting functions for the 2 modalities were not fundamentally different. Moreover, high familiar odors and faces were better remembered than low familiar ones, indicating an important role of semantic knowledge on recognition proficiency for both modalities. Although odor recognition was significantly better than chance at the 64 days testing, memory for the low familiar odors was relatively poor. Also, the results indicated that odor identification consistency across sessions, irrespective of accuracy, was positively related to successful recognition.

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Citations

Apr 14, 2017·The Quarterly Journal of Experimental Psychology : QJEP·Steffen A HerffRoger T Dean
Dec 26, 2017·Frontiers in Psychology·Agnieszka Sorokowska, Maciej Karwowski
Mar 11, 2020·American Journal of Human Biology : the Official Journal of the Human Biology Council·Kara C HooverJ Colette Berbesque
Aug 29, 2017·Memory·Andrew MossAndrew Johnson
Mar 1, 2019·Frontiers in Psychology·Piotr SorokowskiAgnieszka Sorokowska
Jul 6, 2018·Frontiers in Psychology·Stina Cornell KärnekullMaria Larsson
Nov 9, 2018·Psychonomic Bulletin & Review·Ryan P M HackländerChristina Bermeitinger
Jun 14, 2019·Journal of Rural Medicine : JRM·Hideaki HanaokaHitoshi Okamura
Dec 23, 2020·Trends in Cognitive Sciences·Asifa Majid
Mar 1, 2021·Progress in Neurobiology·Guangyu ZhouChristina Zelano

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