Is Novelty Detection Important in Long-Term Odor Memory?
| Autor: | E.P. Köster, E. Leslie Cameron, Per Møller |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
vision
Visual perception Forgetting General Neuroscience Novelty Neurosciences. Biological psychiatry. Neuropsychiatry Olfaction forced-choice methods Novelty detection Article memory Odor Olfactory memory Verbal memory Psychology psychological phenomena and processes RC321-571 Cognitive psychology olfaction |
| Zdroj: | Brain Sciences Volume 11 Issue 9 Brain Sciences, Vol 11, Iss 1146, p 1146 (2021) |
| ISSN: | 2076-3425 |
| Popis: | Memory for odors is believed to be longer-lasting than memory for visual stimuli, as is evidenced by flat forgetting curves. However, performance on memory tasks is typically weaker in olfaction than vision. Studies of odor memory that use forced-choice methods confound responses that are a result of a trace memory and responses that can be obtained through process of elimination. Moreover, odor memory is typically measured with common stimuli, which are more familiar and responses may be confounded by verbal memory, and measure memory in intentional learning conditions, which are ecologically questionable. Here we demonstrate the value of using tests of memory in which hit rate and correct rejection rate are evaluated separately (i.e., not using forced-choice methods) and uncommon stimuli are used. This study compared memory for common and uncommon odors and pictures that were learned either intentionally (Exp. 1) or incidentally (Exp. 2) and tested with either a forced-choice or a one-stimulus-at-a-time (“monadic”) recognition task after delays of 15 min, 48 h or 1 week. As expected, memory declined with delay in most conditions, but depended upon the particular measure of memory and was better for pictures than odors and for common than uncommon stimuli. For common odors, hit rates decreased with delay but correct rejection rates remained constant with delay. For common pictures, we found the opposite result, constant hit rates and decreased correct rejection rates. Our results support the ‘misfit theory of conscious olfactory perception’, which highlights the importance of the detection of novelty in olfactory memory and suggests that olfactory memory should be studied using more ecologically valid methods. |
| Databáze: | OpenAIRE |
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