2008
Comparison of contrast-response functions from multifocal visual-evoked potentials (mfVEPs) and functional MRI responses
Park JC, Zhang X, Ferrera J, Hirsch J, Hood DC. Comparison of contrast-response functions from multifocal visual-evoked potentials (mfVEPs) and functional MRI responses. Journal Of Vision 2008, 8: 8-8. PMID: 19146350, PMCID: PMC2987574, DOI: 10.1167/8.10.8.Peer-Reviewed Original ResearchConceptsBOLD fMRI responsesMultifocal visual-evoked potentialsContrast response functionsVisual-evoked potentialsFMRI responsesNeural activityFunctional MRI responsesBOLD fMRI signalMonocular mfVEPRetinotopic mapMRI responseV1 areaPattern stimuliBOLD responseFMRI signalsSame stimuliSubjectsResponseV1MfVEPStimuliMfVEPsCortexNeural Integration of Top-Down Spatial and Feature-Based Information in Visual Search
Egner T, Monti JM, Trittschuh EH, Wieneke CA, Hirsch J, Mesulam M. Neural Integration of Top-Down Spatial and Feature-Based Information in Visual Search. Journal Of Neuroscience 2008, 28: 6141-6151. PMID: 18550756, PMCID: PMC6670545, DOI: 10.1523/jneurosci.1262-08.2008.Peer-Reviewed Original ResearchConceptsCue informationVisual searchActivation gainVisual search targetBlood oxygenation level-dependent (BOLD) responseSpatial cue informationLevel-dependent responsesSearch onsetDown biasingSpatial expectancyOculomotor planningIntraparietal sulcusSearch targetSalience mapBOLD responseSearch templateCingulate regionsNeural integrationTarget featuresHuman brainTarget locationSearch performanceA multiplicative model for spatial interaction in the human visual cortex
Zhang X, Park JC, Salant J, Thomas S, Hirsch J, Hood DC. A multiplicative model for spatial interaction in the human visual cortex. Journal Of Vision 2008, 8: 4-4. PMID: 18831627, PMCID: PMC2987578, DOI: 10.1167/8.8.4.Peer-Reviewed Original Research
2006
Predictive Codes for Forthcoming Perception in the Frontal Cortex
Summerfield C, Egner T, Greene M, Koechlin E, Mangels J, Hirsch J. Predictive Codes for Forthcoming Perception in the Frontal Cortex. Science 2006, 314: 1311-1314. PMID: 17124325, DOI: 10.1126/science.1132028.Peer-Reviewed Original ResearchConceptsFrontal cortexIncoming sensory informationMedial frontal cortexPresence of facesPerceptual ambiguityPerceptual decisionsSensory evidenceNeural representationVisual objectsSensory environmentVisual areasPredictive codingSensory informationPredictive codePerceptionCortexFaceHuman subjectsBrainObserved evidenceDecisionsAmbiguityRepresentationEvidenceObjects
2005
Cognitive control mechanisms resolve conflict through cortical amplification of task-relevant information
Egner T, Hirsch J. Cognitive control mechanisms resolve conflict through cortical amplification of task-relevant information. Nature Neuroscience 2005, 8: 1784-1790. PMID: 16286928, DOI: 10.1038/nn1594.Peer-Reviewed Original ResearchMeSH KeywordsAdultAttentionBehaviorBrain MappingCerebral CortexCerebrovascular CirculationCognitionConflict, PsychologicalDecision MakingFemaleFunctional LateralityHumansMagnetic Resonance ImagingMaleNerve NetNeural PathwaysNeuropsychological TestsPattern Recognition, VisualPhotic StimulationPrefrontal CortexReaction TimeVisual CortexVolitionConceptsTask-relevant informationCognitive control mechanismsTask-irrelevant informationCognitive controlTask-relevant stimulus informationCognitive control systemConflict resolutionDorsolateral prefrontal cortexHuman visual cortexAttentional biasingFace processingPerceptual processingFace stimuliStroop taskNeural representationStimulus informationResponse tendenciesOccurrence of conflictsHigh conflictPrefrontal cortexProminent modelsCortical responsesTrial levelCortical amplificationVisual cortexMistaking a House for a Face: Neural Correlates of Misperception in Healthy Humans
Summerfield C, Egner T, Mangels J, Hirsch J. Mistaking a House for a Face: Neural Correlates of Misperception in Healthy Humans. Cerebral Cortex 2005, 16: 500-508. PMID: 16014866, DOI: 10.1093/cercor/bhi129.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imaging studyAccount of perceptionImages of housesMagnetic resonance imaging studyResonance imaging studyNeural correlatesPerceptual judgmentsInferior occipitalVisual regionsCorrect trialsIncorrect trialsRight parietal regionParietal regionsHouse imagesParahippocampal gyrusPredictive codingNormal visionPerceptionFaceMisperceptionsFFA responseImaging studiesHealthy humansGyrusConcurrent activation
2000
Visual Function and Brain Organization in Non-decussating Retinal–Fugal Fibre Syndrome
Victor J, Apkarian P, Hirsch J, Conte M, Packard M, Relkin N, Kim K, Shapley R. Visual Function and Brain Organization in Non-decussating Retinal–Fugal Fibre Syndrome. Cerebral Cortex 2000, 10: 2-22. PMID: 10639391, DOI: 10.1093/cercor/10.1.2.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentBrain MappingContrast SensitivityElectroencephalographyFemaleFunctional LateralityHumansInfantMagnetic Resonance ImagingMotion PerceptionNeuronal PlasticityOptic ChiasmOptic Nerve DiseasesPhotic StimulationRetinaSyndromeTwins, DizygoticVisual CortexVisual PathwaysVisual PerceptionConceptsVisual functionIpsilateral primary visual cortexExtensive bilateral activationMagnetic resonance imaging studyNormal visual behaviorPrimary visual cortexResonance imaging studyFunctional magnetic resonance imaging studyPrestriate areasVisual namingOcular instabilityRetinal projectionsStriate cortexBilateral activationVisual cortexVisual pathwayImaging studiesContrast sensitivityContralateral representationElectrophysiological investigationsEye mapSimple visual stimuliFunctional neuroimagingPatientsBrain organization
1995
Illusory contours activate specific regions in human visual cortex: evidence from functional magnetic resonance imaging.
Hirsch J, DeLaPaz R, Relkin N, Victor J, Kim K, Li T, Borden P, Rubin N, Shapley R. Illusory contours activate specific regions in human visual cortex: evidence from functional magnetic resonance imaging. Proceedings Of The National Academy Of Sciences Of The United States Of America 1995, 92: 6469-6473. PMID: 7604015, PMCID: PMC41539, DOI: 10.1073/pnas.92.14.6469.Peer-Reviewed Original ResearchMeSH KeywordsBrain MappingHumansMagnetic Resonance ImagingOptical IllusionsVision, OcularVisual CortexVisual PerceptionConceptsPerceptual grouping operationsIllusory contoursSpecific brain regionsGrouping operationsFunctional magnetic resonance imagingIllusory contour perceptionBrain regionsFunctional magnetic resonanceHuman visual cortexHuman visual systemContour perceptionNeural basisPerceptual contoursVisual stimuliRight hemisphereExtrastriate cortexHuman visionKanizsa squareVisual systemActivated regionsVisual stimulationVisual cortexSimilar inducersContinuous contourCortex