Interplay of Rhythmic and Discrete Manipulation Movements During Development: A Policy-Search Reinforcement-Learning Robot Model. - Valentina Cristina Meola; Daniele Caligiore; Valerio Sperati; Loredana Zollo; Anna Lisa Ciancio; Fabrizio Taffoni; Eugenio Guglielmelli; Gianluca Baldassarre (IEEE Trans. Cogn. Dev. Syst., 2016)