Cited by 207Visual perception and processing mechanismsNeural dynamics and brain functionMemory Processes and Influences

A neural measure of precision in visual working memory

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Ester, Edward F., Anderson, David E., Serences, John T., Awh, Edward·2013·Journal of Cognitive Neuroscience

Abstract

Recent studies suggest that the temporary storage of visual detail in working memory is mediated by sensory recruitment or sustained patterns of stimulus-specific activation within feature-selective regions of visual cortex. According to a strong version of this hypothesis, the relative "quality" of these patterns should determine the clarity of an individual's memory. Here, we provide a direct test of this claim. We used fMRI and a forward encoding model to characterize population-level orientation-selective responses in visual cortex while human participants held an oriented grating in memory. This analysis, which enables a precise quantitative description of multivoxel, population-level activity measured during working memory storage, revealed graded response profiles whose amplitudes were greatest for the remembered orientation and fell monotonically as the angular distance from this orientation increased. Moreover, interparticipant differences in the dispersion-but not the amplitude-of these response profiles were strongly correlated with performance on a concurrent memory recall task. These findings provide important new evidence linking the precision of sustained population-level responses in visual cortex and memory acuity.

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  • Decoding accuracy was higher for people who could more accurately form mental images during both working memory and mental imagery tasks.

    “Interestingly, decoding accuracy was higher for people who could more accurately form mental images during both tasks (WM: r = 20.51,p = 0.0053; IM: r = 20.37,p = 0.039; Figure S2), providing a strong link between mental imagery ability and the precision of population-level responses [21,22].”

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Authors
Ester, E. F., Anderson, D. E., Serences, J. T., & Awh, E.
Affiliations
  • University of California San Diego (US)
  • University of Oregon (US)
Venue
Journal of Cognitive Neuroscience
Published
2013-05-01
Volume
25
Issue
5
Pages
754-761
ISSN
  • 0898-929X (ISSN-L)
  • 1530-8898
OpenAlex
W2164118194
Cited by
207
References
43
Citations by year
2026: 11 · 2025: 15 · 2024: 21 · 2023: 19 · 2022: 7 · 2021: 23 · 2020: 11 · 2019: 13 · 2018: 11 · 2017: 19 · 2016: 16 · 2015: 17 · 2014: 20 · 2013: 3
FWCI
10.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Cognitive Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH087214)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
visual working memory, memory precision, visual cortex, memory retrieval, individual differences, sustained neural activity
MeSH terms
Adult, Analysis of Variance, Brain, Brain Mapping, Choice Behavior, Female, Humans, Image Processing, Computer-Assisted, Functional Laterality, Magnetic Resonance Imaging, Male, Memory, Short-Term, Orientation, Oxygen, Pattern Recognition, Visual, Photic Stimulation, Reaction Time, Mental Recall, Time Factors, Visual Pathways, Young Adult

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