Visual Working Memory Resources Are Best Characterized as Dynamic, Quantifiable Mnemonic Traces

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2017
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Veksler, Bella Z.
Boyd, Rachel
Myers, Christopher W.
Gunzelmann, Glenn
Gray, Wayne D.
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Visual working memory (VWM) is a construct hypothesized to store a small amount of accurate perceptual information that can be brought to bear on a task. Much research concerns the construct's capacity and the precision of the information stored. Two prominent theories of VWM representation have emerged: slot-based and continuous-resource mechanisms. Prior modeling work suggests that a continuous resource that varies over trials with variable capacity and a potential to make localization errors best accounts for the empirical data. Questions remain regarding the variability in VWM capacity and precision. Using a novel eye-tracking paradigm, we demonstrate that VWM facilitates search and exhibits effects of fixation frequency and recency, particularly for prior targets. Whereas slot-based memory models cannot account for the human data, a novel continuous-resource model does capture the behavioral and eye tracking data, and identifies the relevant resource as item activation.

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ISO 690VEKSLER, Bella Z., Rachel BOYD, Christopher W. MYERS, Glenn GUNZELMANN, Hansjörg NETH, Wayne D. GRAY, 2017. Visual Working Memory Resources Are Best Characterized as Dynamic, Quantifiable Mnemonic Traces. In: Topics in Cognitive Science. 2017, 9(1), pp. 83-101. ISSN 1756-8757. eISSN 1756-8765. Available under: doi: 10.1111/tops.12248
BibTex
@article{Veksler2017Visua-38845,
  year={2017},
  doi={10.1111/tops.12248},
  title={Visual Working Memory Resources Are Best Characterized as Dynamic, Quantifiable Mnemonic Traces},
  number={1},
  volume={9},
  issn={1756-8757},
  journal={Topics in Cognitive Science},
  pages={83--101},
  author={Veksler, Bella Z. and Boyd, Rachel and Myers, Christopher W. and Gunzelmann, Glenn and Neth, Hansjörg and Gray, Wayne D.}
}
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