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Development of long-term event memory in preverbal infants: an eye-tracking study
The development of long-term event memory in preverbal infants remains elusive. To address this issue, we applied an eye-tracking method that successfully revealed in great apes that they have long-term memory of single events. Six-, 12-, 18- and 24-month-old infants watched a video story in which a...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5341052/ https://www.ncbi.nlm.nih.gov/pubmed/28272489 http://dx.doi.org/10.1038/srep44086 |
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author | Nakano, Tamami Kitazawa, Shigeru |
author_facet | Nakano, Tamami Kitazawa, Shigeru |
author_sort | Nakano, Tamami |
collection | PubMed |
description | The development of long-term event memory in preverbal infants remains elusive. To address this issue, we applied an eye-tracking method that successfully revealed in great apes that they have long-term memory of single events. Six-, 12-, 18- and 24-month-old infants watched a video story in which an aggressive ape-looking character came out from one of two identical doors. While viewing the same video again 24 hours later, 18- and 24-month-old infants anticipatorily looked at the door where the character would show up before it actually came out, but 6- and 12-month-old infants did not. Next, 12-, 18- and 24-month-old infants watched a different video story, in which a human grabbed one of two objects to hit back at the character. In their second viewing after a 24-hour delay, 18- and 24-month-old infants increased viewing time on the objects before the character grabbed one. In this viewing, 24-month-old infants preferentially looked at the object that the human had used, but 18-month-old infants did not show such preference. Our results show that infants at 18 months of age have developed long-term event memory, an ability to encode and retrieve a one-time event and this ability is elaborated thereafter. |
format | Online Article Text |
id | pubmed-5341052 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53410522017-03-10 Development of long-term event memory in preverbal infants: an eye-tracking study Nakano, Tamami Kitazawa, Shigeru Sci Rep Article The development of long-term event memory in preverbal infants remains elusive. To address this issue, we applied an eye-tracking method that successfully revealed in great apes that they have long-term memory of single events. Six-, 12-, 18- and 24-month-old infants watched a video story in which an aggressive ape-looking character came out from one of two identical doors. While viewing the same video again 24 hours later, 18- and 24-month-old infants anticipatorily looked at the door where the character would show up before it actually came out, but 6- and 12-month-old infants did not. Next, 12-, 18- and 24-month-old infants watched a different video story, in which a human grabbed one of two objects to hit back at the character. In their second viewing after a 24-hour delay, 18- and 24-month-old infants increased viewing time on the objects before the character grabbed one. In this viewing, 24-month-old infants preferentially looked at the object that the human had used, but 18-month-old infants did not show such preference. Our results show that infants at 18 months of age have developed long-term event memory, an ability to encode and retrieve a one-time event and this ability is elaborated thereafter. Nature Publishing Group 2017-03-08 /pmc/articles/PMC5341052/ /pubmed/28272489 http://dx.doi.org/10.1038/srep44086 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Nakano, Tamami Kitazawa, Shigeru Development of long-term event memory in preverbal infants: an eye-tracking study |
title | Development of long-term event memory in preverbal infants: an eye-tracking study |
title_full | Development of long-term event memory in preverbal infants: an eye-tracking study |
title_fullStr | Development of long-term event memory in preverbal infants: an eye-tracking study |
title_full_unstemmed | Development of long-term event memory in preverbal infants: an eye-tracking study |
title_short | Development of long-term event memory in preverbal infants: an eye-tracking study |
title_sort | development of long-term event memory in preverbal infants: an eye-tracking study |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5341052/ https://www.ncbi.nlm.nih.gov/pubmed/28272489 http://dx.doi.org/10.1038/srep44086 |
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