Samejima K, and Doya K. Multiple representations of belief states and action values in cortico-basal ganliga loops. Ann N Y Acad Sci 2007.(in press)
    Kawato M, and Samejima K. Efficient reinforcement learning: computational theories, neuroscience and robotics. Curr Opin Neurobiol 17: 205-212, 2007.[medline][SD]
    Tanaka SC, Samejima K, Okada G, Ueda K, Okamoto Y, Yamawaki S, and Doya K. Brain mechanism of reward prediction under predictable and unpredictable environmental dynamics. Neural Netw 19: 1233-1241, 2006.[medline][SD]
    Samejima K, Ueda Y, Doya K, and Kimura M. Representation of action-specific reward values in the striatum. Science 310: 1337-1340, 2005.[medline]
    Haruno M, Kuroda T, Doya K, Toyama K, Kimura M, Samejima K, Imamizu H, and Kawato M. A neural correlate of reward-based behavioral learning in caudate nucleus: a functional magnetic resonance imaging study of a stochastic decision task. J Neurosci 24: 1660-1665, 2004. [medline][JNS]
    Samejima K, Doya K, and Kawato M. Inter-module credit assignment in modular reinforcement learning. Neural Netw 16: 985-994, 2003.[medline] [SD]
    Doya K, Samejima K, Katagiri K, and Kawato M. Multiple model-based reinforcement learning. Neural Comput 14: 1347-1369, 2002. [medline][MITPress]
     Itami C, Samejima K, Nakamura S. Improved data processing for optical imaging of developing neuronal connectivity in the neonatal mouse barrel cortex. Brain Research Protocol, 7(2):103-14, 2001. [medline][SD]
    Samejima K, and Omori T. Adaptive internal state space construction method for reinforcement learning of a real-world agent. Neural Netw 12: 1143-1155, 1999. [medline][SD]
Conference papers
    Samejima K, Ueda Y, Doya K, and Kimura M, Estimating internal variables and parameters of a learning agent by a particle filter, In Thrun, S, Saul, LK and Sholkopf, B, editers, Advance in Neural Information Processing Systems 16, 1335-1342, 2004 [pdf]
    Samejima, K. and Omori, T., Adaptive state space formation method for reinforcement learning, Proc. of the Fifth International Conference on Neural Information Processing (ICONIP'98), 251-255, 1998
     Samejima, K, Ueda, Y, Doya, K, Kimura, M; A reinforcement learning model predicts monkey's choice and dorsal striatal activities, Society for Neuroscience, Washington DC , USA, Nov. 2005.
    Samejima, K. Ueda, Y.; Kimura, M.; Doya, K.; Activity of striate projection neurons encodes action selective reward expectations. Society for Neuroscience, New Orleans, USA, Nov. 2003.