Parallel processing in visual short-term memory.
Visual short-term memory for the contrast and spatial frequency of sinusoidal gratings was measured in a delayed discrimination task in which the 2 stimuli to be compared were separated in time by 1–10 s interstimulus intervals (ISIs). Delayed discrimination thresholds for spatial frequency and con...
| Published in: | Journal of Experimental Psychology. Human Perception & Performance Vol. 22; pp. 202 - 213 |
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| Main Authors: | , , |
| Format: | Article |
| Published: |
American Psychological Association
February 1996
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=512744161&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 512744161 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00961523 EPH jtl: Journal of Experimental Psychology. Human Perception & Performance issn: 00961523 maglogo: N pubinfo: dt: February 1996 vid: 22 pid: 34 pub: American Psychological Association artinfo: ui: 512744161 10.1037/0096-1523.22.1.202 ppf: 202 ppct: 11 formats: tig: atl: Parallel processing in visual short-term memory. aug: au: Magnussen, Svein Greenlee, Mark W. Thomas, James P. su: Visual perception Short-term memory sug: subj: Visual perception Short-term memory ab: Visual short-term memory for the contrast and spatial frequency of sinusoidal gratings was measured in a delayed discrimination task in which the 2 stimuli to be compared were separated in time by 1–10 s interstimulus intervals (ISIs). Delayed discrimination thresholds for spatial frequency and contrast were compared, both when the 2 types of thresholds were measured in separate blocks of trials and when the 2 types of measures were randomly intermixed in an uncertainty paradigm, which required participants to process information about both dimensions on each trial. In both cases, accuracy of memory for spatial frequency was independent of ISI, but memory for contrast decreased as ISI increased. Performance was lower in the uncertainty case, but only by an amount predicted by statistical decision theory for independent sources. The results are consistent with a model assuming a set of parallel special-purpose visual discrimination and short-term memory mechanisms. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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