Search Results - "Ohki, Kenichi"
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Natural images are reliably represented by sparse and variable populations of neurons in visual cortex
Published in Nature communications (13-02-2020)“…Natural scenes sparsely activate neurons in the primary visual cortex (V1). However, how sparsely active neurons reliably represent complex natural images and…”
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Transient neuronal coactivations embedded in globally propagating waves underlie resting-state functional connectivity
Published in Proceedings of the National Academy of Sciences - PNAS (07-06-2016)“…Resting-state functional connectivity (FC), which measures the correlation of spontaneous hemodynamic signals (HemoS) between brain areas, is widely used to…”
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Laminar differences in the orientation selectivity of geniculate afferents in mouse primary visual cortex
Published in Nature neuroscience (01-02-2016)“…The authors used two-photon imaging to measure the orientation tuning of thalamic boutons and neurons in mouse V1. They found that a smaller fraction of…”
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Neuronal Origin of the Temporal Dynamics of Spontaneous BOLD Activity Correlation
Published in Cerebral cortex (New York, N.Y. 1991) (01-04-2019)“…Abstract Resting-state functional connectivity (FC) has become a major functional magnetic resonance imaging method to study network organization of human…”
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Chromatic micromaps in primary visual cortex
Published in Nature communications (19-04-2021)“…The clustering of neurons with similar response properties is a conspicuous feature of neocortex. In primary visual cortex (V1), maps of several properties…”
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Characterisation of nonlinear receptive fields of visual neurons by convolutional neural network
Published in Scientific reports (07-03-2019)“…A comprehensive understanding of the stimulus-response properties of individual neurons is necessary to crack the neural code of sensory cortices. However, a…”
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Functional Segregation and Development of Mouse Higher Visual Areas
Published in The Journal of neuroscience (27-09-2017)“…Recent studies suggest that higher visual areas (HVAs) in the mouse visual cortex are segregated anatomically into two visual streams, likely analogous to the…”
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Thalamocortical circuits for the formation of hierarchical pathways in the mammalian visual cortex
Published in Frontiers in neural circuits (17-04-2023)“…External sensory inputs propagate from lower-order to higher-order brain areas, and the hierarchical neural network supporting this information flow is a…”
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Mixed functional microarchitectures for orientation selectivity in the mouse primary visual cortex
Published in Nature communications (21-10-2016)“…A minicolumn is the smallest anatomical module in the cortical architecture, but it is still in debate whether it serves as functional units for cortical…”
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ARViS: a bleed-free multi-site automated injection robot for accurate, fast, and dense delivery of virus to mouse and marmoset cerebral cortex
Published in Nature communications (10-09-2024)“…Genetically encoded fluorescent sensors continue to be developed and improved. If they could be expressed across multiple cortical areas in non-human primates,…”
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Similarity of Visual Selectivity among Clonally Related Neurons in Visual Cortex
Published in Neuron (Cambridge, Mass.) (12-07-2012)“…Neurons in rodent visual cortex are organized in a salt-and-pepper fashion for orientation selectivity, but it is still unknown how this functional…”
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Response Selectivity of the Lateral Posterior Nucleus Axons Projecting to the Mouse Primary Visual Cortex
Published in Frontiers in neural circuits (28-02-2022)“…Neurons in the mouse primary visual cortex (V1) exhibit characteristic response selectivity to visual stimuli, such as orientation, direction and spatial…”
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Developmental stage-specific spontaneous activity contributes to callosal axon projections
Published in eLife (24-08-2022)“…The developing neocortex exhibits spontaneous network activity with various synchrony levels, which has been implicated in the formation of cortical circuits…”
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Long-Range Interhemispheric Projection Neurons Show Biased Response Properties and Fine-Scale Local Subnetworks in Mouse Visual Cortex
Published in Cerebral cortex (New York, N.Y. 1991) (05-01-2021)“…Abstract Integration of information processed separately in distributed brain regions is essential for brain functions. This integration is enabled by…”
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Dynamics of directional motor tuning in the primate premotor and primary motor cortices during sensorimotor learning
Published in Nature communications (20-08-2024)“…Sensorimotor learning requires reorganization of neuronal activity in the premotor cortex (PM) and primary motor cortex (M1). To reveal PM- and M1-specific…”
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Dissociation and convergence of the dorsal and ventral visual working memory streams in the human prefrontal cortex
Published in NeuroImage (Orlando, Fla.) (15-01-2013)“…Visual information is largely processed through two pathways in the primate brain: an object pathway from the primary visual cortex to the temporal cortex…”
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Cell Type Specific Representation of Vibro-tactile Stimuli in the Mouse Primary Somatosensory Cortex
Published in Frontiers in neural circuits (20-12-2018)“…Although the processing of whisker deflections in the barrel area of the rodent primary somatosensory cortex (S1) has been studied extensively, how cutaneous…”
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Astrocytes in the mouse visual cortex reliably respond to visual stimulation
Published in Biochemical and biophysical research communications (10-11-2018)“…Astrocytes are known to contact with a great number of synapses and may integrate sensory inputs. In the ferret primary visual cortex, astrocytes respond to a…”
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Specificity and randomness in the visual cortex
Published in Current opinion in neurobiology (01-08-2007)“…Research on the functional anatomy of visual cortical circuits has recently zoomed in from the macroscopic level to the microscopic. High-resolution functional…”
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Homeostatic Regulation of Eye-Specific Responses in Visual Cortex during Ocular Dominance Plasticity
Published in Neuron (Cambridge, Mass.) (21-06-2007)“…Experience-dependent plasticity is crucial for the precise formation of neuronal connections during development. It is generally thought to depend on Hebbian…”
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