- The integration of direct bottom-up inputs with contextual information is a core feature of neocortical circuits. In area V1, neurons may reduce their firing rates when their receptive field input can be predicted by spatial context. Gamma-synchronized (30–80 Hz) firing may provide a complementary signal to rates, reflecting stronger synchronization between neuronal populations receiving mutually predictable inputs. We show that large uniform surfaces, which have high spatial predictability, strongly suppressed firing yet induced prominent gamma synchronization in macaque V1, particularly when they were colored. Yet, chromatic mismatches between center and surround, breaking predictability, strongly reduced gamma synchronization while increasing firing rates. Differences between responses to different colors, including strong gamma-responses to red, arose from stimulus adaptation to a full-screen background, suggesting prominent differences in adaptation between M- and L-cone signaling pathways. Thus, synchrony signaled whether RF inputs were predicted from spatial context, while firing rates increased when stimuli were unpredicted from context.
MetadatenAuthor: | Alina PeterORCiDGND, Cem UranORCiD, Johanna Klon-Lipok, Rasmus Roese, Sylvia van Stijn, William Barnes, Jarrod Robert DowdallORCiD, Wolf SingerORCiDGND, Pascal FriesORCiDGND, Martin VinckORCiD |
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URN: | urn:nbn:de:hebis:30:3-529900 |
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DOI: | https://doi.org/10.7554/eLife.42101 |
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ISSN: | 2050-084X |
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Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/30714900 |
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Parent Title (English): | eLife |
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Publisher: | eLife Sciences Publications |
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Place of publication: | Cambridge |
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Contributor(s): | Laura Colgin |
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Document Type: | Article |
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Language: | English |
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Year of Completion: | 2019 |
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Date of first Publication: | 2019/02/04 |
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Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
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Release Date: | 2020/03/04 |
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Tag: | color vision; contextual modulation; efficient coding; gamma oscillations; neuroscience; predictive coding; research article; rhesus macaque; surround suppression |
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Volume: | 8 |
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Issue: | e42101 |
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Page Number: | 38 |
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First Page: | 1 |
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Last Page: | 38 |
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Note: | Copyright Peter et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited |
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HeBIS-PPN: | 461396904 |
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Institutes: | Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS) |
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| Angeschlossene und kooperierende Institutionen / MPI für Hirnforschung |
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Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
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Sammlungen: | Universitätspublikationen |
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Licence (German): | Creative Commons - Namensnennung 4.0 |
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