2024
Spatial context non-uniformly modulates inter-laminar information flow in the primary visual cortex
Xu X, Morton M, Denagamage S, Hudson N, Nandy A, Jadi M. Spatial context non-uniformly modulates inter-laminar information flow in the primary visual cortex. Neuron 2024 PMID: 39442514, DOI: 10.1016/j.neuron.2024.09.021.Peer-Reviewed Original ResearchPrimary visual cortexVisual cortexInformation flowCommunication subspaceDimensionality reduction approachSensory hierarchyOrganization of objectsOutput layerSpatial organization of objectsInformation propagationPerceptual degradationCortical connectivityEffective feedback signalActivity of neuronal ensemblesContextual signalsInfluence information flowSpatial configurationNeuronal ensemblesNon-uniformityConfigurationReduction approachSpatial configuration of contextual stimuli influences inter-laminar interactions in macaque primary visual cortex
Xu X, Morton M, Hudson N, Nandy A, Jadi M. Spatial configuration of contextual stimuli influences inter-laminar interactions in macaque primary visual cortex. Journal Of Vision 2024, 24: 338. DOI: 10.1167/jov.24.10.338.Peer-Reviewed Original ResearchGeometry of anisotropic contextual interactions in the visual cortex places fundamental limits on spatial vision.
Morton M, Denagamage S, Hudson N, Nandy A. Geometry of anisotropic contextual interactions in the visual cortex places fundamental limits on spatial vision. Journal Of Vision 2024, 24: 1432. DOI: 10.1167/jov.24.10.1432.Peer-Reviewed Original ResearchVisual cortexWidespread receptive field remapping in early primate visual cortex
Denagamage S, Morton M, Hudson N, Nandy A. Widespread receptive field remapping in early primate visual cortex. Cell Reports 2024, 43: 114557. PMID: 39058592, PMCID: PMC11484688, DOI: 10.1016/j.celrep.2024.114557.Peer-Reviewed Original ResearchEarly visual cortexVisual cortexReceptive fieldsArea V2Tuning properties of neuronsPrimate visual cortexCued saccade taskVisual area V2Tuning propertiesPredictive remappingProperties of neuronsEye movementsRemappingCortical layersCell typesNeuronsSaccadic eye movementsCortical areasPerceptual stabilityCortexCurrent modelsSaccade taskBrain-state mediated modulation of inter-laminar dependencies in visual cortex
Das A, Sheffield A, Nandy A, Jadi M. Brain-state mediated modulation of inter-laminar dependencies in visual cortex. Nature Communications 2024, 15: 5105. PMID: 38877026, PMCID: PMC11178935, DOI: 10.1038/s41467-024-49144-w.Peer-Reviewed Original ResearchConceptsBrain state fluctuationsUnique dependenceSpatial attentionBehavioral outcomesState fluctuationsDeployment of spatial attentionDeployment of attentionBehaviorally relevant objectsComputational goalCluttered environmentsVisual cortexObject recognitionExcitatory populationHierarchical computationVisual area V4Internal fluctuationsDependenceRelevant objectsModulation patternsTask demandsEnhance information transferCortical networksNeural activityInformation transferArea V4
2023
Laminar mechanisms of saccadic suppression in primate visual cortex
Denagamage S, Morton M, Hudson N, Reynolds J, Jadi M, Nandy A. Laminar mechanisms of saccadic suppression in primate visual cortex. Cell Reports 2023, 42: 112720. PMID: 37392385, PMCID: PMC10528056, DOI: 10.1016/j.celrep.2023.112720.Peer-Reviewed Original ResearchConceptsSaccadic suppressionFiring rateInter-neuronal correlationsLocal inhibitory activityCortical firing ratesEye movementsSaccadic eye movementsPutative inhibitory interneuronsDistinct neural subpopulationsVisual cortical networkPrimate visual cortexVisual area V4Inhibitory interneuronsCortical circuitryVisual cortexSaccade onsetArea V4Single neuronsCortical networksNeural subpopulationsVisual stabilityNeuronsInhibitory activityTemporary reductionVisual sensitivity