2022
Focal electrical stimulation of human retinal ganglion cells for vision restoration
Madugula S, Gogliettino A, Zaidi M, Aggarwal G, Kling A, Shah N, Brown J, Vilkhu R, Hays M, Nguyen H, Fan V, Wu E, Hottowy P, Sher A, Litke A, Silva R, Chichilnisky E. Focal electrical stimulation of human retinal ganglion cells for vision restoration. Journal Of Neural Engineering 2022, 19: 066040. PMID: 36533865, PMCID: PMC10010036, DOI: 10.1088/1741-2552/aca5b5.Peer-Reviewed Original ResearchConceptsHuman retinal ganglion cellsRetinal ganglion cellsElectrical stimulationVision restorationGanglion cellsExtracellular electrical stimulationPrimate retinal ganglion cellsFocal electrical stimulationRetina ex vivoRGC typesAxon bundlesEx vivoHuman retinaStimulationStimulation algorithmMulti-electrode arraysSimultaneous recordingEpiretinal implantsRetinaSimultaneous activationRetinal implantsCell typesNeural codeActivation propertiesMacaques
2021
Automatic Identification of Axon Bundle Activation for Epiretinal Prosthesis
Tandon P, Bhaskhar N, Shah N, Madugula S, Grosberg L, Fan VH, Hottowy P, Sher A, Litke AM, Chichilnisky EJ, Mitra S. Automatic Identification of Axon Bundle Activation for Epiretinal Prosthesis. IEEE Transactions On Neural Systems And Rehabilitation Engineering 2021, 29: 2496-2502. PMID: 34784278, PMCID: PMC8860174, DOI: 10.1109/tnsre.2021.3128486.Peer-Reviewed Original ResearchConceptsAxon bundle activationRetinal ganglion cellsBundle activationAxonal stimulationEpiretinal prosthesisEx vivo stimulationStimulation current amplitudeGanglion cellsReceptive field locationMacaque retinaVivo stimulationElectrical stimulationAxon bundlesAxonal spikesStimulationProsthesisCortical implantsRetinal prosthesisActivationRetinal implantsVisual perceptsElectrical recordingsCellsInadvertent activationImplants
2017
Activation of ganglion cells and axon bundles using epiretinal electrical stimulation
Grosberg LE, Ganesan K, Goetz GA, Madugula SS, Bhaskhar N, Fan V, Li P, Hottowy P, Dabrowski W, Sher A, Litke AM, Mitra S, Chichilnisky EJ. Activation of ganglion cells and axon bundles using epiretinal electrical stimulation. Journal Of Neurophysiology 2017, 118: 1457-1471. PMID: 28566464, PMCID: PMC5596129, DOI: 10.1152/jn.00750.2016.Peer-Reviewed Original ResearchConceptsRetinal ganglion cellsGanglion cellsIndividual ganglion cellsAxon bundlesBundle activationCentral retinaElectrical stimulationLarge-scale multielectrode recordingsEpiretinal prosthesisIndividual retinal ganglion cellsAxon bundle activationCombined electrical stimulationEpiretinal electrical stimulationFunction of stimulationPeripheral retinaPrimate retinaBundle activityMultielectrode recordingsRetinaEpiretinal stimulationElicit spikesStimulationBundle signalsSingle-spike resolutionProsthesis
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