Baker, Daniel Hart orcid.org/0000-0002-0161-443X and Richard, Bruno (2019) Dynamic properties of internal noise probed by modulating binocular rivalry. PLoS Computational Biology. e1007071. ISSN 1553-7358
Abstract
Neural systems are inherently noisy, and this noise can affect our perception from moment to moment. This is particularly apparent in binocular rivalry, where perception of competing stimuli shown to the left and right eyes alternates over time. We modulated rivalling stimuli using dynamic sequences of external noise of various rates and amplitudes. We repeated each external noise sequence twice, and assessed the consistency of percepts across repetitions. External noise modulations of sufficiently high contrast increased consistency scores above baseline, and were most effective at 1/8Hz. A computational model of rivalry in which internal noise has a 1/f (pink) temporal amplitude spectrum, and a standard deviation of 16% contrast, provided the best account of our data. Our novel technique provides detailed estimates of the dynamic properties of internal noise during binocular rivalry, and by extension the stochastic processes that drive our perception and other types of spontaneous brain activity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Baker, Richard. |
Keywords: | binocular rivalry,double pass consistency,internal noise,computational modelling,bistable stimuli |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Psychology (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Jun 2019 08:00 |
Last Modified: | 19 Dec 2024 00:09 |
Published Version: | https://doi.org/10.1101/480988 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1101/480988 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:147056 |
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Filename: journal.pcbi.1007071.pdf
Description: Dynamic properties of internal noise probed by modulating binocular rivalry
Licence: CC-BY 2.5