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  Conscious Perception of Flickering Stimuli in Binocular Rivalry and Continuous Flash Suppression Is Not Affected by tACS-induced SSR Modulation

Schauer, G., Ogawa, C., Tsuchiya, N., & Bartels, A. (2020). Conscious Perception of Flickering Stimuli in Binocular Rivalry and Continuous Flash Suppression Is Not Affected by tACS-induced SSR Modulation. Consciousness and Cognition, 82: 102953, pp. 1-15. doi:10.1016/j.concog.2020.102953.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-728D-B Version Permalink: http://hdl.handle.net/21.11116/0000-0006-728F-9
Genre: Journal Article

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 Creators:
Schauer, G1, 2, Author              
Ogawa, CY, Author
Tsuchiya, N, Author
Bartels, A1, 2, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              

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 Abstract: The content of conscious perception is known to correlate with steady-state responses (SSRs), yet their causal relationship remains unclear. Can we manipulate conscious perception by directly interfering with SSRs through transcranial alternating current stimulation (tACS)? Here, we directly addressed this question in three experiments involving binocular rivalry and continuous flash suppression (CFS). Specifically, while participants (N = 24) viewed either binocular rivalry or tried to detect stimuli masked by CFS, we applied sham or real tACS across parieto-occipital cortex at either the same or a different frequency and phase as an SSR eliciting flicker stimulus. We found that tACS did not differentially affect conscious perception in the forms of predominance, CFS detection accuracy, reaction time, or metacognitive sensitivity, confirmed by Bayesian statistics. We conclude that tACS application at frequencies of stimulus-induced SSRs does not have perceptual effects and that SSRs may be epiphenomenal to conscious perception.

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 Dates: 2020-07
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.concog.2020.102953
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Title: Consciousness and Cognition
Source Genre: Journal
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Publ. Info: Orlando, Fla. : Academic Press
Pages: - Volume / Issue: 82 Sequence Number: 102953 Start / End Page: 1 - 15 Identifier: ISSN: 1053-8100
CoNE: https://pure.mpg.de/cone/journals/resource/954922650165