Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?

Research on pupillometry provides an increasing evidence for associations between pupil activity and memory processing. The most consistent finding is related to an increase in pupil size for old items compared with novel items, suggesting that pupil activity is associated with the strength of memor...

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Autores principales:	Jorge Oliveira, Marta Fernandes, Pedro J. Rosa, Pedro Gamito
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	pupillary response recognition memory memory strength eye tracking pupillometry Psychology BF1-990
Acceso en línea:	https://doaj.org/article/b72c8e23c62c436e883a84f265d6016e
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id	oai:doaj.org-article:b72c8e23c62c436e883a84f265d6016e
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spelling	oai:doaj.org-article:b72c8e23c62c436e883a84f265d6016e2021-11-30T11:43:10ZIs Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?1664-107810.3389/fpsyg.2021.686183https://doaj.org/article/b72c8e23c62c436e883a84f265d6016e2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpsyg.2021.686183/fullhttps://doaj.org/toc/1664-1078Research on pupillometry provides an increasing evidence for associations between pupil activity and memory processing. The most consistent finding is related to an increase in pupil size for old items compared with novel items, suggesting that pupil activity is associated with the strength of memory signal. However, the time course of these changes is not completely known, specifically, when items are presented in a running recognition task maximizing interference by requiring the recognition of the most recent items from a sequence of old/new items. The sample comprised 42 healthy participants who performed a visual word recognition task under varying conditions of retention interval. Recognition responses were evaluated using behavioral variables for discrimination accuracy, reaction time, and confidence in recognition decisions. Pupil activity was recorded continuously during the entire experiment. The results suggest a decrease in recognition performance with increasing study-test retention interval. Pupil size decreased across retention intervals, while pupil old/new effects were found only for words recognized at the shortest retention interval. Pupillary responses consisted of a pronounced early pupil constriction at retrieval under longer study-test lags corresponding to weaker memory signals. However, the pupil size was also sensitive to the subjective feeling of familiarity as shown by pupil dilation to false alarms (new items judged as old). These results suggest that the pupil size is related not only to the strength of memory signal but also to subjective familiarity decisions in a continuous recognition memory paradigm.Jorge OliveiraMarta FernandesPedro J. RosaPedro GamitoFrontiers Media S.A.articlepupillary responserecognition memorymemory strengtheye trackingpupillometryPsychologyBF1-990ENFrontiers in Psychology, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pupillary response recognition memory memory strength eye tracking pupillometry Psychology BF1-990
spellingShingle	pupillary response recognition memory memory strength eye tracking pupillometry Psychology BF1-990 Jorge Oliveira Marta Fernandes Pedro J. Rosa Pedro Gamito Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
description	Research on pupillometry provides an increasing evidence for associations between pupil activity and memory processing. The most consistent finding is related to an increase in pupil size for old items compared with novel items, suggesting that pupil activity is associated with the strength of memory signal. However, the time course of these changes is not completely known, specifically, when items are presented in a running recognition task maximizing interference by requiring the recognition of the most recent items from a sequence of old/new items. The sample comprised 42 healthy participants who performed a visual word recognition task under varying conditions of retention interval. Recognition responses were evaluated using behavioral variables for discrimination accuracy, reaction time, and confidence in recognition decisions. Pupil activity was recorded continuously during the entire experiment. The results suggest a decrease in recognition performance with increasing study-test retention interval. Pupil size decreased across retention intervals, while pupil old/new effects were found only for words recognized at the shortest retention interval. Pupillary responses consisted of a pronounced early pupil constriction at retrieval under longer study-test lags corresponding to weaker memory signals. However, the pupil size was also sensitive to the subjective feeling of familiarity as shown by pupil dilation to false alarms (new items judged as old). These results suggest that the pupil size is related not only to the strength of memory signal but also to subjective familiarity decisions in a continuous recognition memory paradigm.
format	article
author	Jorge Oliveira Marta Fernandes Pedro J. Rosa Pedro Gamito
author_facet	Jorge Oliveira Marta Fernandes Pedro J. Rosa Pedro Gamito
author_sort	Jorge Oliveira
title	Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
title_short	Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
title_full	Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
title_fullStr	Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
title_full_unstemmed	Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?
title_sort	is pupil activity associated with the strength of memory signal for words in a continuous recognition memory paradigm?
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/b72c8e23c62c436e883a84f265d6016e
work_keys_str_mv	AT jorgeoliveira ispupilactivityassociatedwiththestrengthofmemorysignalforwordsinacontinuousrecognitionmemoryparadigm AT martafernandes ispupilactivityassociatedwiththestrengthofmemorysignalforwordsinacontinuousrecognitionmemoryparadigm AT pedrojrosa ispupilactivityassociatedwiththestrengthofmemorysignalforwordsinacontinuousrecognitionmemoryparadigm AT pedrogamito ispupilactivityassociatedwiththestrengthofmemorysignalforwordsinacontinuousrecognitionmemoryparadigm
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Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?

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