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Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition

This paper furthers our attempts to resolve two major controversies—whether gamma synchrony plays a role in cognition, and whether cortical columns are functionally important. We have previously argued that the configuration of cortical cells that emerges in development is that which maximizes the m...

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Detalles Bibliográficos
Autores principales: Wright, James J., Bourke, Paul D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5145869/
https://www.ncbi.nlm.nih.gov/pubmed/28018202
http://dx.doi.org/10.3389/fncom.2016.00127
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author Wright, James J.
Bourke, Paul D.
author_facet Wright, James J.
Bourke, Paul D.
author_sort Wright, James J.
collection PubMed
description This paper furthers our attempts to resolve two major controversies—whether gamma synchrony plays a role in cognition, and whether cortical columns are functionally important. We have previously argued that the configuration of cortical cells that emerges in development is that which maximizes the magnitude of synchronous oscillation and minimizes metabolic cost. Here we analyze the separate effects in development of minimization of axonal lengths, and of early Hebbian learning and selective distribution of resources to growing synapses, by showing in simulations that these effects are partially antagonistic, but their interaction during development produces accurate anatomical and functional properties for both columnar and non-columnar cortex. The resulting embryonic anatomical order can provide a cortex-wide scaffold for postnatal learning that is dimensionally consistent with the representation of moving sensory objects, and, as learning progressively overwrites the embryonic order, further associations also occur in a dimensionally consistent framework. The role ascribed to cortical synchrony does not demand specific frequency, amplitude or phase variation of pulses to mediate “feature linking.” Instead, the concerted interactions of pulse synchrony with short-term synaptic dynamics, and synaptic resource competition can further explain cortical information processing in analogy to Hopfield networks and quantum computation.
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spelling pubmed-51458692016-12-23 Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition Wright, James J. Bourke, Paul D. Front Comput Neurosci Neuroscience This paper furthers our attempts to resolve two major controversies—whether gamma synchrony plays a role in cognition, and whether cortical columns are functionally important. We have previously argued that the configuration of cortical cells that emerges in development is that which maximizes the magnitude of synchronous oscillation and minimizes metabolic cost. Here we analyze the separate effects in development of minimization of axonal lengths, and of early Hebbian learning and selective distribution of resources to growing synapses, by showing in simulations that these effects are partially antagonistic, but their interaction during development produces accurate anatomical and functional properties for both columnar and non-columnar cortex. The resulting embryonic anatomical order can provide a cortex-wide scaffold for postnatal learning that is dimensionally consistent with the representation of moving sensory objects, and, as learning progressively overwrites the embryonic order, further associations also occur in a dimensionally consistent framework. The role ascribed to cortical synchrony does not demand specific frequency, amplitude or phase variation of pulses to mediate “feature linking.” Instead, the concerted interactions of pulse synchrony with short-term synaptic dynamics, and synaptic resource competition can further explain cortical information processing in analogy to Hopfield networks and quantum computation. Frontiers Media S.A. 2016-12-09 /pmc/articles/PMC5145869/ /pubmed/28018202 http://dx.doi.org/10.3389/fncom.2016.00127 Text en Copyright © 2016 Wright and Bourke. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Wright, James J.
Bourke, Paul D.
Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title_full Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title_fullStr Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title_full_unstemmed Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title_short Further Work on the Shaping of Cortical Development and Function by Synchrony and Metabolic Competition
title_sort further work on the shaping of cortical development and function by synchrony and metabolic competition
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5145869/
https://www.ncbi.nlm.nih.gov/pubmed/28018202
http://dx.doi.org/10.3389/fncom.2016.00127
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