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

dc.contributor.authorOliveira, Jorge
dc.contributor.authorFernandes, Marta
dc.contributor.authorRosa, Pedro Joel
dc.contributor.authorGamito, Pedro
dc.contributor.institutionHEI-LAB (FCT) - Digital Laboratories for Environments and Human Interactions
dc.date.issued2021-11-23
dc.description.abstractResearch 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.pt
dc.description.statusNon peer reviewed
dc.formatapplication/pdf
dc.identifier.citationOliveira , J , Fernandes , M , Rosa , P J & Gamito , P 2021 , ' Is Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm? ' , Default journal .
dc.identifier.issn1646-3730
dc.language.isoeng
dc.publisherEdições Universitárias Lusófonas
dc.relation.ispartofDefault journal
dc.rightsopenAccess
dc.subjectPSICOLOGIA
dc.subjectPUPILLARY RESPONSE
dc.subjectRECOGNITION MEMORY
dc.subjectMEMORY STRENGTH
dc.subjectEYE TRACKING
dc.subjectPUPILLOMETRY
dc.subjectPSYCHOLOGY
dc.titleIs Pupil Activity Associated With the Strength of Memory Signal for Words in a Continuous Recognition Memory Paradigm?en

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