TY - JOUR
T1 - Olfactory modulation of colour working memory
T2 - How does citrus-like smell influence the memory of orange colour?
AU - Tamura, Kaori
AU - Hamakawa, Masayuki
AU - Okamoto, Tsuyoshi
N1 - Funding Information:
There are two funders: One is Qdai-jump Research Program (grant number: 27818, 2015-2017), no web page. The other is Kobayashi International Scholarship Foundation (no grant number), URL is http://www.kisf.or.jp/english/. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Publisher Copyright:
© 2018 Tamura et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2018/9
Y1 - 2018/9
N2 - Olfactory modulation of vision is not well understood whereas visual modulation of olfaction has been more fully investigated. This study aimed to reveal in a simple manner whether there is olfactory modulation of colour working memory using an odour that induces a citrus-like smell and is associated with orange colours. We assumed that the odour would have modulatory effects on the colour information stored in working memory. To clarify whether these effects are supportive or disruptive, during the colour working memory task we measured an event-related potential component, P3, which is involved in attentional processes of working memory. The results indicated that odour presentation mediated a decline in the rate of correct guesses for orange colours. Furthermore, the odour suppressed P3 during reddish-colour retrieval, including orange. These results suggest that colour working memory in orange can be disrupted via olfactory modulation with citrus-like odours.
AB - Olfactory modulation of vision is not well understood whereas visual modulation of olfaction has been more fully investigated. This study aimed to reveal in a simple manner whether there is olfactory modulation of colour working memory using an odour that induces a citrus-like smell and is associated with orange colours. We assumed that the odour would have modulatory effects on the colour information stored in working memory. To clarify whether these effects are supportive or disruptive, during the colour working memory task we measured an event-related potential component, P3, which is involved in attentional processes of working memory. The results indicated that odour presentation mediated a decline in the rate of correct guesses for orange colours. Furthermore, the odour suppressed P3 during reddish-colour retrieval, including orange. These results suggest that colour working memory in orange can be disrupted via olfactory modulation with citrus-like odours.
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U2 - 10.1371/journal.pone.0203876
DO - 10.1371/journal.pone.0203876
M3 - Article
C2 - 30212534
AN - SCOPUS:85053284599
SN - 1932-6203
VL - 13
JO - PloS one
JF - PloS one
IS - 9
M1 - e0203876
ER -