Perceptual grouping boosts visual working memory capacity and reduces effort during retention.
Consistent, robust boosts to visual working memory capacity are observed when colour–location arrays contain duplicate colours. The prevailing explanation suggests that duplicated colours are encoded as one perceptual group. If so, then we should observe not only higher working memory capacity overa...
| Published in: | British Journal of Psychology Vol. 110; no. 2; pp. 306 - 328 |
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| Format: | Article |
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Wiley-Blackwell
May2019
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=135876814&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 135876814 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00071269 BJP jtl: British Journal of Psychology issn: 00071269 maglogo: Y pubinfo: dt: May2019 vid: 110 iid: 2 pid: 480 pub: Wiley-Blackwell artinfo: ui: 135876814 10.1111/bjop.12355 ppf: 306 ppct: 22 formats: fmt: – @attributes: type: T – @attributes: type: C – @attributes: type: P size: 825KB tig: atl: Perceptual grouping boosts visual working memory capacity and reduces effort during retention. aug: au: Morey, Candice C. affil: School of Psychology, Cardiff University, UK su: Task performance Color vision Eye movements Pupil (Eye) Short-term memory Visual perception sug: subj: Task performance Color vision Eye movements Pupil (Eye) Short-term memory Visual perception keyword: Bayesian inference eye movement perceptual organization pupillometry similarity visual short‐term memory working memory Bayesian inference eye movement perceptual organization pupillometry similarity visual short‐term memory working memory ab: Consistent, robust boosts to visual working memory capacity are observed when colour–location arrays contain duplicate colours. The prevailing explanation suggests that duplicated colours are encoded as one perceptual group. If so, then we should observe not only higher working memory capacity overall for displays containing duplicates, but specifically an improved ability to remember unique colours from displays including duplicates compared with displays comprising all uniquely coloured items. Furthermore, less effort should be required to retain displays as colour redundancy increases. I recorded gaze position and pupil sizes during a visual change detection task including displays of 4–6 items with either all unique colours, two items with a common colour, or three items with a common colour in samples of young and healthy elderly adults. Increased redundancy was indeed associated with higher estimated working memory capacity, both for tests of duplicates and uniquely coloured items. Redundancy was also associated with decreased pupil size during retention, especially in young adults. While elderly adults also benefited from colour redundancy, spillover to unique items was less obvious with low redundancy than in young adults. This experiment confirms previous findings and presents complementary novel evidence linking perceptual grouping via colour redundancy with decreased mental effort. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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