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362

Title

Causal evidence for the role of the sensory visual cortex in visual short-term memory maintenanceuse asterix (*) to get italics

Authors

Phivos Phylactou; Andria Shimi; Nikos KonstantinouPlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"

Year

2023

Picture

Abstract

<p>The role of the sensory visual cortex during visual short-term memory (VSTM) remains controversial. This controversy is possibly due to methodological issues in previous attempts to investigate the effects of transcranial magnetic stimulation (TMS) on VSTM. The aim of this study was to use TMS, while covering previous methodological deficits. Sixty-four young adults were recruited to participate in two experiments (Experiment 1: n = 36; Experiment 2: n = 28) using a VSTM orientation change-detection task under TMS. Monocular vision was ensured using red-blue goggles combined with red-blue stimuli. Double-pulse TMS was delivered at different times (Experiment 1: 0 ms, 200 ms, or 1000 ms; Experiment 2: 200 ms, 1000 ms) during a 2 second maintenance phase, on one side of the occipital hemisphere. In Experiment 2, a sham-TMS condition was introduced. Decreased detection sensitivity (d’) in the ipsilateral occipital hemisphere to visual hemifield, and in the real TMS (compared to sham TMS) condition indicated inhibitory TMS effects, and thus, a causal involvement of the sensory visual cortex during early (200 ms) and late (1000 ms) maintenance in VSTM. These findings are aligned with sensory recruitment, which proposes that both perceptual and memory processes rely upon the same neural substrates in the sensory visual cortex. The methods utilized in this study were preregistered and had received in principle acceptance on 06 June 2022 (Stage 1 protocol can be found in: https://doi.org/10.17605/OSF.IO/EMPDT).</p>

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Keywords

visual short-term memory; sensory visual cortex; working memory; sensory recruitment

Methods that require specific expertise (optional)

NonePlease indicate the methods that may require specialised expertise during the peer review process (use a comma to separate various required expertises).

Thematic fields

Social sciences

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Submission date

2023-01-03 08:47:59

Recommender

Zoltan Dienes

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