Federal University of Espirito Santo (UFES) 2 articles published in JoVE Neuroscience Stereotaxic Surgery for Implantation of Microelectrode Arrays in the Common Marmoset (Callithrix jacchus) Samuel Alexander Budoff*1,2, José Firmino Rodrigues Neto*1, Valéria Arboés1, Manuela Sales Lima Nascimento1, Carolina Bione Kunicki1, Mariana Ferreira Pereira de Araújo1,3 1Edmond and Lily Safra International Institute of Neuroscience, Santos Dumont Institute, 2Neuroscience Program, University of Colorado Anschutz Medical Campus, 3Department of Physiological Sciences, Health Sciences Center, Federal University of Espírito Santo This work presents a protocol to perform a stereotaxic, neurosurgical implantation of microelectrode arrays in the common marmoset. This method specifically enables electrophysiological recordings in freely behaving animals but can be easily adapted to any other similar neurosurgical intervention in this species (e.g., cannula for drug administration or electrodes for brain stimulation). Biochemistry Dissection of Human Retina and RPE-Choroid for Proteomic Analysis Thiago Cabral*1,2,7,8, Marcus A. Toral*3,4, Gabriel Velez3,4, James E. DiCarlo1,2, Anuradha M. Gore3, MaryAnn Mahajan3, Stephen H. Tsang1,2, Alexander G. Bassuk5,6, Vinit B. Mahajan3,9 1Barbara & Donald Jonas Stem Cell Laboratory, and Bernard & Shirlee Brown Glaucoma Laboratory, Department of Pathology & Cell Biology, Institute of Human Nutrition, College of Physicians and Surgeons, Columbia University, 2Edward S. Harkness Eye Institute, New York-Presbyterian Hospital, 3Omics Laboratory, Byers Eye Institute, Department of Ophthalmology, Stanford University, 4Medical Scientist Training Program, University of Iowa, 5Department of Pediatrics, University of Iowa, 6Department of Neurology, University of Iowa, 7Department of Ophthalmology, Federal University of Sao Paulo (UNIFESP), 8Department of Ophthalmology, Federal University of EspÍrito Santo (UFES), 9Palo Alto Veterans Administration, Palo Alto, CA The human retina is composed of functionally and molecularly distinct regions, including the fovea, macula, and peripheral retina. Here, we describe a method using punch biopsies and manual removal of tissue layers from a human eye to dissect and collect these distinct retinal regions for downstream proteomic analysis.
