1. Department of Linguistics and Basque Studies, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
2. Computer Arts Laboratory, University of Aizu, Aizu-Wakamatsu, Japan
3. Integrative Neuroscience and Cognition Center (INCC — UMR 8002), Université de Paris, Paris, France
4. Integrative Neuroscience and Cognition Center (INCC — UMR 8002), CNRS, Paris, France