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    The loss of short-term visual representations over time: decay or temporal distinctiveness?

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    Authors
    Mercer, Tom
    Issue Date
    2014-12
    
    Metadata
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    Abstract
    There has been much recent interest in the loss of visual short-term memories over the passage of time. According to decay theory, visual representations are gradually forgotten as time passes, reflecting a slow and steady distortion of the memory trace. However, this is controversial and decay effects can be explained in other ways. The present experiment aimed to reexamine the maintenance and loss of visual information over the short term. Decay and temporal distinctiveness models were tested using a delayed discrimination task, in which participants compared complex and novel objects over unfilled retention intervals of variable length. Experiment 1 found no significant change in the accuracy of visual memory from 2 to 6 s, but the gap separating trials reliably influenced task performance. Experiment 2 found evidence for information loss at a 10-s retention interval, but temporally separating trials restored the fidelity of visual memory, possibly because temporally isolated representations are distinct from older memory traces. In conclusion, visual representations lose accuracy at some point after 6 s, but only within temporally crowded contexts. These findings highlight the importance of temporal distinctiveness within visual short-term memory.
    Citation
    The loss of short-term visual representations over time: decay or temporal distinctiveness? 2014, 40 (6):2281-8 J Exp Psychol Hum Percept Perform
    Publisher
    American Psychological Association
    Journal
    Journal of experimental psychology. Human perception and performance
    URI
    http://hdl.handle.net/2436/620291
    DOI
    10.1037/a0038141
    PubMed ID
    25314045
    Additional Links
    http://wk6kg9sd8m.search.serialssolutions.com/?sid=sersol&SS_jc=JOURNOFEXPPS&title=Journal%20of%20experimental%20psychology.%20Human%20perception%20and%20performance
    Type
    Journal article
    Language
    en
    Description
    Mercer, T. (2014). The loss of short-term visual representations over time: Decay or temporal distinctiveness? Journal of Experimental Psychology: Human Perception and Performance, 40, 2281-2288. doi:10.1037/a0038141
    ISSN
    1939-1277
    ae974a485f413a2113503eed53cd6c53
    10.1037/a0038141
    Scopus Count
    Collections
    Faculty of Education, Health and Wellbeing

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