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    The SSVEP tracks attention, not consciousness, during perceptual filling-in

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    Author
    Davidson, MJ; Mithen, W; Hogendoorn, H; van Boxtel, JJA; Tsuchiya, N
    Date
    2020-11-10
    Source Title
    eLife
    Publisher
    ELIFE SCIENCES PUBLICATIONS LTD
    University of Melbourne Author/s
    Hogendoorn, Jacob
    Affiliation
    Melbourne School of Psychological Sciences
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Davidson, M. J., Mithen, W., Hogendoorn, H., van Boxtel, J. J. A. & Tsuchiya, N. (2020). The SSVEP tracks attention, not consciousness, during perceptual filling-in. ELIFE, 9, https://doi.org/10.7554/eLife.60031.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/253024
    DOI
    10.7554/eLife.60031
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7682990
    Abstract
    Research on the neural basis of conscious perception has almost exclusively shown that becoming aware of a stimulus leads to increased neural responses. By designing a novel form of perceptual filling-in (PFI) overlaid with a dynamic texture display, we frequency-tagged multiple disappearing targets as well as their surroundings. We show that in a PFI paradigm, the disappearance of a stimulus and subjective invisibility is associated with increases in neural activity, as measured with steady-state visually evoked potentials (SSVEPs), in electroencephalography (EEG). We also find that this increase correlates with alpha-band activity, a well-established neural measure of attention. These findings cast doubt on the direct relationship previously reported between the strength of neural activity and conscious perception, at least when measured with current tools, such as the SSVEP. Instead, we conclude that SSVEP strength more closely measures changes in attention.

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