Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.

The 'communication through coherence' (CTC) hypothesis proposes that selective communication among neural networks is achieved by coherence between firing rate oscillation in a sending region and gain modulation in a receiving region. Although this hypothesis has stimulated extensive work,...

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Autores principales:	Thomas E Akam, Dimitri M Kullmann
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/d9fcb2af28e94c63a6d2b1712dab99f1
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spelling	oai:doaj.org-article:d9fcb2af28e94c63a6d2b1712dab99f12021-11-18T05:52:42ZEfficient "communication through coherence" requires oscillations structured to minimize interference between signals.1553-734X1553-735810.1371/journal.pcbi.1002760https://doaj.org/article/d9fcb2af28e94c63a6d2b1712dab99f12012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23144603/?tool=EBIhttps://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358The 'communication through coherence' (CTC) hypothesis proposes that selective communication among neural networks is achieved by coherence between firing rate oscillation in a sending region and gain modulation in a receiving region. Although this hypothesis has stimulated extensive work, it remains unclear whether the mechanism can in principle allow reliable and selective information transfer. Here we use a simple mathematical model to investigate how accurately coherent gain modulation can filter a population-coded target signal from task-irrelevant distracting inputs. We show that selective communication can indeed be achieved, although the structure of oscillatory activity in the target and distracting networks must satisfy certain previously unrecognized constraints. Firstly, the target input must be differentiated from distractors by the amplitude, phase or frequency of its oscillatory modulation. When distracting inputs oscillate incoherently in the same frequency band as the target, communication accuracy is severely degraded because of varying overlap between the firing rate oscillations of distracting inputs and the gain modulation in the receiving region. Secondly, the oscillatory modulation of the target input must be strong in order to achieve a high signal-to-noise ratio relative to stochastic spiking of individual neurons. Thus, whilst providing a quantitative demonstration of the power of coherent oscillatory gain modulation to flexibly control information flow, our results identify constraints imposed by the need to avoid interference between signals, and reveal a likely organizing principle for the structure of neural oscillations in the brain.Thomas E AkamDimitri M KullmannPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 8, Iss 11, p e1002760 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Thomas E Akam Dimitri M Kullmann Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
description	The 'communication through coherence' (CTC) hypothesis proposes that selective communication among neural networks is achieved by coherence between firing rate oscillation in a sending region and gain modulation in a receiving region. Although this hypothesis has stimulated extensive work, it remains unclear whether the mechanism can in principle allow reliable and selective information transfer. Here we use a simple mathematical model to investigate how accurately coherent gain modulation can filter a population-coded target signal from task-irrelevant distracting inputs. We show that selective communication can indeed be achieved, although the structure of oscillatory activity in the target and distracting networks must satisfy certain previously unrecognized constraints. Firstly, the target input must be differentiated from distractors by the amplitude, phase or frequency of its oscillatory modulation. When distracting inputs oscillate incoherently in the same frequency band as the target, communication accuracy is severely degraded because of varying overlap between the firing rate oscillations of distracting inputs and the gain modulation in the receiving region. Secondly, the oscillatory modulation of the target input must be strong in order to achieve a high signal-to-noise ratio relative to stochastic spiking of individual neurons. Thus, whilst providing a quantitative demonstration of the power of coherent oscillatory gain modulation to flexibly control information flow, our results identify constraints imposed by the need to avoid interference between signals, and reveal a likely organizing principle for the structure of neural oscillations in the brain.
format	article
author	Thomas E Akam Dimitri M Kullmann
author_facet	Thomas E Akam Dimitri M Kullmann
author_sort	Thomas E Akam
title	Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
title_short	Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
title_full	Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
title_fullStr	Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
title_full_unstemmed	Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
title_sort	efficient "communication through coherence" requires oscillations structured to minimize interference between signals.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/d9fcb2af28e94c63a6d2b1712dab99f1
work_keys_str_mv	AT thomaseakam efficientcommunicationthroughcoherencerequiresoscillationsstructuredtominimizeinterferencebetweensignals AT dimitrimkullmann efficientcommunicationthroughcoherencerequiresoscillationsstructuredtominimizeinterferencebetweensignals
_version_	1718424759165779968

Efficient "communication through coherence" requires oscillations structured to minimize interference between signals.

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