[1
]Artificial and Mechanical Intelligence, Center for Robotics and Intelligent Systems,
Istituto Italiano di Tecnologia, Genoa, Italy
[2
]Florida Institute for Human and Machine Cognition, Pensacola, FL, USA
[3
]Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign,
Champaign, IL, USA
[4
]Department of Information Technology and Human Factors, CNRS-AIST Joint Robotics Laboratory
(JRL), IRL; National Institute of Advanced Industrial Science and Technology (AIST),
Tsukuba, Japan
[5
]Department of Applied Electronics, Faculty of Advanced Engineering, Tokyo University
of Science, Tokyo, Japan
[6
]Inria, Loria, CNRS, Université de Lorraine, Nancy, France