Journal ArticleDOI
Neuronal circuits of the neocortex
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TLDR
It is found that, as has long been suspected by cortical neuroanatomists, the same basic laminar and tangential organization of the excitatory neurons of the neocortex is evident wherever it has been sought.Abstract:
We explore the extent to which neocortical circuits generalize, i.e., to what extent can neocortical neurons and the circuits they form be considered as canonical? We find that, as has long been suspected by cortical neuroanatomists, the same basic laminar and tangential organization of the excitatory neurons of the neocortex is evident wherever it has been sought. Similarly, the inhibitory neurons show characteristic morphology and patterns of connections throughout the neocortex. We offer a simple model of cortical processing that is consistent with the major features of cortical circuits: The superficial layer neurons within local patches of cortex, and within areas, cooperate to explore all possible interpretations of different cortical input and cooperatively select an interpretation consistent with their various cortical and subcortical inputs.read more
Citations
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A million spiking-neuron integrated circuit with a scalable communication network and interface
Paul A. Merolla,John V. Arthur,Rodrigo Alvarez-Icaza,Andrew S. Cassidy,Jun Sawada,Filipp Akopyan,Bryan L. Jackson,Nabil Imam,Chen Guo,Yutaka Nakamura,Bernard Brezzo,Ivan Vo,Steven K. Esser,Rathinakumar Appuswamy,Brian Taba,Arnon Amir,Myron D. Flickner,William P. Risk,Rajit Manohar,Dharmendra S. Modha +19 more
TL;DR: Inspired by the brain’s structure, an efficient, scalable, and flexible non–von Neumann architecture is developed that leverages contemporary silicon technology and is well suited to many applications that use complex neural networks in real time, for example, multiobject detection and classification.
Journal ArticleDOI
What we can do and what we cannot do with fMRI
TL;DR: An overview of the current state of fMRI is given, and the current understanding of the haemodynamic signals and the constraints they impose on neuroimaging data interpretation are presented.
Journal ArticleDOI
An anatomically comprehensive atlas of the adult human brain transcriptome
Michael Hawrylycz,Ed S. Lein,Angela L. Guillozet-Bongaarts,Elaine H. Shen,Lydia Ng,Jeremy A. Miller,Louie N. van de Lagemaat,Kimberly A. Smith,Amanda Ebbert,Zackery L. Riley,Chris Abajian,Christian F. Beckmann,Amy Bernard,Darren Bertagnolli,Andrew F. Boe,Preston M. Cartagena,M. Mallar Chakravarty,Mike Chapin,Jimmy Chong,Rachel A. Dalley,Barry Daly,Chinh Dang,Suvro Datta,Nick Dee,Tim A. Dolbeare,Vance Faber,David Feng,David R. Fowler,Jeff Goldy,Benjamin W. Gregor,Zeb Haradon,David R. Haynor,John G. Hohmann,Steve Horvath,Robert Howard,Andreas Jeromin,Jayson M. Jochim,Marty Kinnunen,Christopher Lau,Evan T. Lazarz,Changkyu Lee,Tracy Lemon,Ling Li,Yang Li,John A. Morris,Caroline C. Overly,Patrick D. Parker,Sheana Parry,Melissa Reding,Joshua J. Royall,Jay Schulkin,Pedro Adolfo Sequeira,Clifford R. Slaughterbeck,Simon Smith,Andy J. Sodt,Susan M. Sunkin,Beryl Swanson,Marquis P. Vawter,Derric Williams,Paul Wohnoutka,H. Ronald Zielke,Daniel H. Geschwind,Patrick R. Hof,Stephen M. Smith,Christof Koch,Seth G. N. Grant,Allan R. Jones +66 more
TL;DR: A transcriptional atlas of the adult human brain is described, comprising extensive histological analysis and comprehensive microarray profiling of ∼900 neuroanatomically precise subdivisions in two individuals, to form a high-resolution transcriptional baseline for neurogenetic studies of normal and abnormal human brain function.
Journal ArticleDOI
Canonical Microcircuits for Predictive Coding
André M. Bastos,William Martin Usrey,Rick A. Adams,George R. Mangun,Pascal Fries,Pascal Fries,Karl J. Friston +6 more
TL;DR: This analysis discloses a remarkable correspondence between the microcircuitry of the cortical column and the connectivity implied by predictive coding and provides some intuitive insights into the functional asymmetries between feedforward and feedback connections and the characteristic frequencies over which they operate.
Journal ArticleDOI
Neurophysiological and Computational Principles of Cortical Rhythms in Cognition
TL;DR: A plethora of studies will be reviewed on the involvement of long-distance neuronal coherence in cognitive functions such as multisensory integration, working memory, and selective attention, and implications of abnormal neural synchronization are discussed as they relate to mental disorders like schizophrenia and autism.
References
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Relationship between intrinsic connections and functional architecture revealed by optical imaging and in vivo targeted biocytin injections in primate striate cortex
TL;DR: High-resolution functional maps of the cortical architecture were obtained by in vivo optical imaging and it was discovered that binocular domains formed a separate set of connections in area V1; binocular regions were selectively connected among themselves but were not connected to strictly monocular regions, suggesting that they constitute a distinct columnar system.
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Microstructure of the neocortex: Comparative aspects
TL;DR: Differences in cortical areas of the human, rat and mouse probably indicate the evolutionary adaptation of excitatory and inhibitory circuits to particular functions.
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Varieties and distribution of non-pyramidal cells in the somatic sensory cortex of the squirrel monkey.
TL;DR: The morphology and distribution of cells which do not conform to the conventional pyramidal pattern have been investigated in rapid Golgi, Golgi‐Kopsch and Gol Gi‐Cox preparations from juvenile and mature squirrel monkeys.
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Functional anatomy of macaque striate cortex. II. Retinotopic organization.
TL;DR: In the central half of V1, the cortical magnification was found to be greater along the vertical than along the horizontal meridian, and overall magnification factors appeared to be scaled proportionate to brain size across different species.
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Horizontal integration and cortical dynamics.
TL;DR: Several results are discussed that lead to a view that cells in the visual system are endowed with dynamic properties, influenced by context, expectation, and long-term modifications of the cortical network.