Pupil dilation reflects interference during memory retrieval

Research output: Contribution to conferencePoster

Abstract

We demonstrate that pupillometry can be used to track memory interference independent of explicit responses. Pupil diameter was recorded
throughout encoding and retrieval of words from the same category over 4 trials, causing buildup of proactive interference (PI). In a contrasting
condition, the category was switched on the 4th trial, causing release from interference (RI). Pupil dilation systematically increased for both
conditions as interference built up and retrieval performance declined. Critically, in trial 4 the RI condition resulted in improved retrieval
performance, with significantly smaller pupil dilation than in the PI condition, where performance continued to decline. Principal component analysis
revealed an early dilation peak possibly related to control of interference, and a later component possibly linked to memory search.

Details

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Psychology

Keywords

  • pupillometry, memory retrieval, Interference, principal component analysis
Original languageEnglish
Publication statusPublished - 2016 Jul 21
Publication categoryResearch
Peer-reviewedYes
Event6th International Conference on Memory - Budapest, Hungary
Duration: 2016 Jul 172016 Aug 22
http://www.icom2016.com/

Conference

Conference6th International Conference on Memory
Abbreviated title ICOM-2016
CountryHungary
CityBudapest
Period2016/07/172016/08/22
Internet address

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