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Long-range neural coherence encodes stimulus information in primate visual cortex

Mojtaba Kermani, Elizabeth Zavitz, Brian Oakley, Nicholas S.C. Price, Maureen A. Hagan, Yan T. Wong
doi: https://doi.org/10.1101/2020.06.22.164269
Mojtaba Kermani
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
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Elizabeth Zavitz
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
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Brian Oakley
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
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Nicholas S.C. Price
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
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Maureen A. Hagan
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
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Yan T. Wong
1Department of Physiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
2Department of Electrical and Computer Systems Engineering, Monash University, Clayton, VIC 3800, Australia
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  • For correspondence: yan.wong@monash.edu
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Abstract

In the primary visual cortex, neurons with similar receptive field properties are bound together through widespread networks of horizontal connections that span orientation columns. How connectivity across the cortical surface relates to stimulus information is not fully understood. We recorded spiking activity and the local field potential (LFP) from the primary visual cortex of marmoset monkeys and examined how connectivity between distant orientation columns affect the encoding of visual orientation.

Regardless of their spatial separation, recording sites with similar orientation preferences have higher coherence between spiking activity and the local field potential than sites with different preferred orientation. Using information theoretic methods, we measured the amount of stimulus information that is shared between pairs of sites. More stimulus information can be decoded from pairs with the same preferred stimulus orientation than the pairs with a different preferred orientation, and the amount of information is significantly correlated with the magnitude of beta-band spike-LFP coherence. These effects remained after controlling for firing rate differences.

Our results thus show that spike-LFP synchronization in the beta-band is associated with the encoding of stimulus information within the primary visual cortex of marmoset monkeys.

Significance Statement A fundamental step in processing images in the visual cortex is coordinating the neural activity across distributed populations of neurons. Here, we demonstrate that populations of neurons in the primary visual cortex of marmoset monkeys with the same stimulus orientation preference temporally coordinate their activity patterns when presented with a visual stimulus. We find maximum synchronization in the beta range depends on the similarity of orientation preference at each pair of the neural population.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • ↵* Joint senior authors

  • Conflict of Interest: The authors declare no competing financial interests.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted June 23, 2020.
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Long-range neural coherence encodes stimulus information in primate visual cortex
Mojtaba Kermani, Elizabeth Zavitz, Brian Oakley, Nicholas S.C. Price, Maureen A. Hagan, Yan T. Wong
bioRxiv 2020.06.22.164269; doi: https://doi.org/10.1101/2020.06.22.164269
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Long-range neural coherence encodes stimulus information in primate visual cortex
Mojtaba Kermani, Elizabeth Zavitz, Brian Oakley, Nicholas S.C. Price, Maureen A. Hagan, Yan T. Wong
bioRxiv 2020.06.22.164269; doi: https://doi.org/10.1101/2020.06.22.164269

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