1. Department of Neuroscience and Brain Technologies (NBT), Italian Institute of Technology (IIT), via Morego 30, Genoa 16163, Italy
2. Department of Informatics and Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastraße 1, Zweibrücken 66482, Germany
3. Computer Science Department VI, Technical University Munich (TUM), Boltzmannstraße 3, Garching 85748, Germany