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

Matthew J Davidson, Will Mithen, Hinze Hogendoorn, Jeroen Ja Van Boxtel, Naotsugu Tsuchiya

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
Pages (from-to)1-26
Number of pages26
JournaleLife
Volume9
DOIs
Publication statusPublished - 10 Nov 2020

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