Fondazione Istituto Italiano di Tecnologia (IIT) 1 article published in JoVE Neuroscience Interfacing 3D Engineered Neuronal Cultures to Micro-Electrode Arrays: An Innovative In Vitro Experimental Model Mariateresa Tedesco1, Monica Frega1,2, Sergio Martinoia1, Mattia Pesce3, Paolo Massobrio1 1Department of Informatics, Bioengineering, Robotics and System Engineering (DIBRIS), University of Genova, 2Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Center, 3Fondazione Istituto Italiano di Tecnologia (IIT) In this work, a novel experimental model in which 3D neuronal cultures are coupled to planar Micro-Electrode Arrays (MEAs) is presented. 3D networks are built by seeding neurons in a scaffold made up of glass microbeads on which neurons grow and form interconnected 3D structures.