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Articles, Behavioral/Systems/Cognitive

Higher-Order Interactions Characterized in Cortical Activity

Shan Yu, Hongdian Yang, Hiroyuki Nakahara, Gustavo S. Santos, Danko Nikolić and Dietmar Plenz
Journal of Neuroscience 30 November 2011, 31 (48) 17514-17526; DOI: https://doi.org/10.1523/JNEUROSCI.3127-11.2011
Shan Yu
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Hongdian Yang
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Hiroyuki Nakahara
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Gustavo S. Santos
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Danko Nikolić
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Dietmar Plenz
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Abstract

In the cortex, the interactions among neurons give rise to transient coherent activity patterns that underlie perception, cognition, and action. Recently, it was actively debated whether the most basic interactions, i.e., the pairwise correlations between neurons or groups of neurons, suffice to explain those observed activity patterns. So far, the evidence reported is controversial. Importantly, the overall organization of neuronal interactions and the mechanisms underlying their generation, especially those of high-order interactions, have remained elusive. Here we show that higher-order interactions are required to properly account for cortical dynamics such as ongoing neuronal avalanches in the alert monkey and evoked visual responses in the anesthetized cat. A Gaussian interaction model that utilizes the observed pairwise correlations and event rates and that applies intrinsic thresholding identifies those higher-order interactions correctly, both in cortical local field potentials and spiking activities. This allows for accurate prediction of large neuronal population activities as required, e.g., in brain–machine interface paradigms. Our results demonstrate that higher-order interactions are inherent properties of cortical dynamics and suggest a simple solution to overcome the apparent formidable complexity previously thought to be intrinsic to those interactions.

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The Journal of Neuroscience: 31 (48)
Journal of Neuroscience
Vol. 31, Issue 48
30 Nov 2011
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Higher-Order Interactions Characterized in Cortical Activity
Shan Yu, Hongdian Yang, Hiroyuki Nakahara, Gustavo S. Santos, Danko Nikolić, Dietmar Plenz
Journal of Neuroscience 30 November 2011, 31 (48) 17514-17526; DOI: 10.1523/JNEUROSCI.3127-11.2011

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Higher-Order Interactions Characterized in Cortical Activity
Shan Yu, Hongdian Yang, Hiroyuki Nakahara, Gustavo S. Santos, Danko Nikolić, Dietmar Plenz
Journal of Neuroscience 30 November 2011, 31 (48) 17514-17526; DOI: 10.1523/JNEUROSCI.3127-11.2011
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