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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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Autores principales: Nakano, Tamami, Kitazawa, Shigeru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
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.
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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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