Kazuyuki Samejima

Summary

Affiliation: Tamagawa University
Country: Japan

Publications

  1. ncbi request reprint Inter-module credit assignment in modular reinforcement learning
    Kazuyuki Samejima
    Human Information Science Laboratories, ATR International, 2 2 2 Hikaridai, Seika, Soraku, Kyoto 619 0288, Japan
    Neural Netw 16:985-94. 2003
  2. ncbi request reprint A neural correlate of reward-based behavioral learning in caudate nucleus: a functional magnetic resonance imaging study of a stochastic decision task
    Masahiko Haruno
    Computational Neuroscience Laboratories, Advanced Telecommunications Research Institute, Kyoto 619 0288, Japan
    J Neurosci 24:1660-5. 2004
  3. ncbi request reprint Brain mechanism of reward prediction under predictable and unpredictable environmental dynamics
    Saori C Tanaka
    Department of Bioinformatics and Genomics, Nara Institute of Science and Technology, Japan
    Neural Netw 19:1233-41. 2006
  4. ncbi request reprint Multiple representations of belief states and action values in corticobasal ganglia loops
    Kazuyuki Samejima
    Tamagawa University Brain Science Institute, 6 1 1 Tamagawa gakuen, Machida, Tokyo, Japan 195 8610
    Ann N Y Acad Sci 1104:213-28. 2007
  5. ncbi request reprint Representation of action-specific reward values in the striatum
    Kazuyuki Samejima
    Department of Computational Neurobiology, ATR Computational Neuroscience Laboratories, 619 0288 Kyoto, Japan
    Science 310:1337-40. 2005
  6. pmc Stimulus-dependent adjustment of reward prediction error in the midbrain
    Hiromasa Takemura
    Department of Life Sciences, The University of Tokyo, Tokyo, Japan
    PLoS ONE 6:e28337. 2011
  7. pmc Neural correlates of cognitive dissonance and choice-induced preference change
    Keise Izuma
    Brain Science Institute, Tamagawa University, Machida, Tokyo 194 8610, Japan
    Proc Natl Acad Sci U S A 107:22014-9. 2010
  8. ncbi request reprint Multiple model-based reinforcement learning
    Kenji Doya
    Human Information Science Laboratories, ATR International, Seika, Soraku, Kyoto 619 0288, Japan
    Neural Comput 14:1347-69. 2002

Detail Information

Publications8

  1. ncbi request reprint Inter-module credit assignment in modular reinforcement learning
    Kazuyuki Samejima
    Human Information Science Laboratories, ATR International, 2 2 2 Hikaridai, Seika, Soraku, Kyoto 619 0288, Japan
    Neural Netw 16:985-94. 2003
    ..We implement modular reward for a multiple model-based reinforcement learning (MMRL) architecture and show its effectiveness in simulations of a pursuit task with hidden states and a continuous-time non-linear control task...
  2. ncbi request reprint A neural correlate of reward-based behavioral learning in caudate nucleus: a functional magnetic resonance imaging study of a stochastic decision task
    Masahiko Haruno
    Computational Neuroscience Laboratories, Advanced Telecommunications Research Institute, Kyoto 619 0288, Japan
    J Neurosci 24:1660-5. 2004
    ..These findings suggest that the caudate nucleus is one of the main loci for reward-based behavioral learning...
  3. ncbi request reprint Brain mechanism of reward prediction under predictable and unpredictable environmental dynamics
    Saori C Tanaka
    Department of Bioinformatics and Genomics, Nara Institute of Science and Technology, Japan
    Neural Netw 19:1233-41. 2006
    ....
  4. ncbi request reprint Multiple representations of belief states and action values in corticobasal ganglia loops
    Kazuyuki Samejima
    Tamagawa University Brain Science Institute, 6 1 1 Tamagawa gakuen, Machida, Tokyo, Japan 195 8610
    Ann N Y Acad Sci 1104:213-28. 2007
    ..Furthermore, the medial prefrontal cortex (MPFC) coordinates these multiple value representations and actions at different levels of hierarchy by monitoring the error in predictions...
  5. ncbi request reprint Representation of action-specific reward values in the striatum
    Kazuyuki Samejima
    Department of Computational Neurobiology, ATR Computational Neuroscience Laboratories, 619 0288 Kyoto, Japan
    Science 310:1337-40. 2005
    ..Fewer neurons were tuned to relative values or action choice. These results suggest representation of action values in the striatum, which can guide action selection in the basal ganglia circuit...
  6. pmc Stimulus-dependent adjustment of reward prediction error in the midbrain
    Hiromasa Takemura
    Department of Life Sciences, The University of Tokyo, Tokyo, Japan
    PLoS ONE 6:e28337. 2011
    ..These results suggest that the human reward system can incorporate the level of the stimulus discriminability flexibly into reward computations by modulating previously acquired reward values for a typical stimulus...
  7. pmc Neural correlates of cognitive dissonance and choice-induced preference change
    Keise Izuma
    Brain Science Institute, Tamagawa University, Machida, Tokyo 194 8610, Japan
    Proc Natl Acad Sci U S A 107:22014-9. 2010
    ..Our findings provide important insights into the neural basis of how actions can alter an individual's preferences...
  8. ncbi request reprint Multiple model-based reinforcement learning
    Kenji Doya
    Human Information Science Laboratories, ATR International, Seika, Soraku, Kyoto 619 0288, Japan
    Neural Comput 14:1347-69. 2002
    ..The performance of MMRL was demonstrated for discrete case in a nonstationary hunting task in a grid world and for continuous case in a nonlinear, nonstationary control task of swinging up a pendulum with variable physical parameters...