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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Journal ArticleDOI
Frontal Eye Field Neurons with Spatial Representations Predicted by Their Subcortical Input
Trinity B. Crapse,Marc A. Sommer +1 more
TL;DR: Evidence is provided that one source of ipsilateral information may be the opposite superior colliculus (SC) in the midbrain, which suggests that signals from the two SCs provide each FEF with information about all of visual space, a prerequisite for higher level sensorimotor computations.
Journal ArticleDOI
An overview of adaptive model theory: solving the problems of redundancy, resources, and nonlinear interactions in human movement control
TL;DR: This is presented as the design of a simulator consisting of neural adaptive filters based on cerebellar circuitry that adaptively models (in real time) nonlinear relationships between inputs with changing and uncertain spectral and amplitude probability density functions as is the case for sensory and motor signals.
Journal ArticleDOI
Encephalization, Emergent Properties, and Psychiatry: A Minicolumnar Perspective:
TL;DR: From a perspective of brain growth understood in terms of the development of networks of cortical cell minicolumns, the elemental information-processing units of the brain, this perspective provides a conceptual framework for a better understanding of the origin and maladaptive nature of certain psychiatric conditions.
Journal ArticleDOI
Resolving laminar activation in human V1 using ultra-high spatial resolution fMRI at 7T
Sriranga Kashyap,Dimo Ivanov,Martin Havlicek,Shubharthi Sengupta,Benedikt A. Poser,Kâmil Uludağ,Kâmil Uludağ +6 more
TL;DR: A novel approach for mapping the cortical BOLD response at the spatial scale of cortical layers and columns at 7T affords the ability to directly study the mesoscopic organization of the human cortex, thus, bridging the gap between human cognitive neuroscience and invasive animal studies.
Journal ArticleDOI
Competitive dynamics in cortical responses to visual stimuli.
TL;DR: It is argued that a biophysically plausible cortical circuit with opponent inhibition, spike-frequency adaptation, and synaptic depression can account for the full range of behaviors in the macaque monkey.
References
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Receptive fields, binocular interaction and functional architecture in the cat's visual cortex
David H. Hubel,Torsten N. Wiesel +1 more
TL;DR: This method is used to examine receptive fields of a more complex type and to make additional observations on binocular interaction and this approach is necessary in order to understand the behaviour of individual cells, but it fails to deal with the problem of the relationship of one cell to its neighbours.
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Distributed Hierarchical Processing in the Primate Cerebral Cortex
TL;DR: A summary of the layout of cortical areas associated with vision and with other modalities, a computerized database for storing and representing large amounts of information on connectivity patterns, and the application of these data to the analysis of hierarchical organization of the cerebral cortex are reported on.
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Hierarchical models of object recognition in cortex
TL;DR: A new hierarchical model consistent with physiological data from inferotemporal cortex that accounts for this complex visual task and makes testable predictions is described.
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Neuromorphic electronic systems
TL;DR: It is shown that for many problems, particularly those in which the input data are ill-conditioned and the computation can be specified in a relative manner, biological solutions are many orders of magnitude more effective than those using digital methods.
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