[English Papers] 
 Narihisa Matsumoto and Masato Okada:
Impact of deviation from precise balance of spiketimingdependent plasticity.
to be published in Neural Networks.
http://arXiv.org/abs/condmat/0211503
 Masato Inoue, Hyeyoung Park and Masato Okada:
Evaluation of the adaptive natural gradient descent method for soft committee machines.
to be published in Physical Review d, 2004.
 Tatsuya Uezu, Aya Hirano and Masato Okada:
Retrieval properties of Hopfield and correlated attractors in an associative memory model.
to be published in Journal of Physical Society of Japan.
http://arxiv.org/abs/condmat/0403361
 Seiji Miyoshi and Masato Okada:
Storage capacity diverges with synapse efficiency in associative memory model with synaptic delay and pruning.
to be published in IEEE Transactions on Neural Networks.
http://arxiv.org/abs/condmat/0305517
 Tomoyuki Kimoto and Masato Okada:
Coexistence of memory patterns and mixed states in a sparsely encoded associative memory model storing ultrametric patterns.
to be published in Biological Cybernetics.
http://arXiv.org/abs/condmat/0211428

Invited paper
Koji Wada, Koji Kurata, Masato Okada;
Selforganization of globally continuous and locally distributed information representation.
to be published in Neural Networks.
 Narihisa Matsumoto and Masato Okada:
Neuronal Mechanisms for hierarchical encoding in inferiortemporal cortex.
to be published in Neurocomputing.
 Narihisa Matsumoto and Masato Okada:
Robustness of retrieval properties against imbalance between LTP and LTD of Spiketimedependent plasticity.
to be published in Physical Review E.
http://arXiv.org/abs/condmat/0208079
 Masami Tatsuno and Masato Okada:
Investigation on possible neural mechanisms underlying information geometric measures.
to be published in Neural Computation.
 Kazuyuki Hara and Masato Okada:
Online learning through simple perceptron learning with a margin.
Neural Networks, 17(2), 215223, 2004.
 Yoichi Miyawaki and Masato Okada:
A network model of perceptual suppression induced by transcranial magnetic stimulation.
Neural Computation, 16, 309331, 2004.
 Tomoyuki Kimoto and Masato Okada:
Mixed states on neural network with structural learning.
Neural Networks, 17, 103112, 2004.
http://arxiv.org/abs/condmat/0206559
 Seiji Miyoshi, HiroFumi Yanai and Masato Okada:
Associative memory by recurrent neural networks with delay elements.
Neural Networks, 17, 5563, 2004.
 Hyeyoung Park, Masato Inoue and Masato Okada:
Online learning dynamics of multilayer perceptrons with unidentifiable parameters.
Journal of Physics A: Mathematical and General, 36, 1175311764, 2003.
 Tomoko Ozeki and Masato Okada:
Dynamical properties of Markov Chain Monte Carlo method for image restoration.
Journal of Physics A: Mathematical and General, 36, 1101111021, 2003.
 Tatsuto Murayama and Masato Okada:
Onestep RSB scheme for the rate distortion functions.
Journal of Physics A: Mathematical and General, 36, 1112311130, 2003.
http://arXiv.org/abs/condmat/0207637
 Shigeaki Nishina, Masato Okada and Mitsuo Kawato:
Spatiotemporal dynamics of depth propagation on uniform region.
Vision Research, 43(24), 24932503, 2003.
 Masato Okada, Shigeaki Nishina and Mitsuo Kawato:
The neural computation of the aperture problem: an iterative process.
NeuroReport, 14(14), 17671771, 2003.
 Kazushi Mimura, Tomoyuki Kimoto and Masato Okada:
Synapse efficiency diverges due to synaptic pruning following@overgrowth.
Physical Review E, 68, 031910, 2003.
http://arXiv.org/abs/condmat/0207545
 Toru Aonishi and MasatoOkada:
Dynamicallycoupled oscillators  cooperative behavior via dynamical interaction .
Journal of Physical Society of Japan, 72(6), 13341337, 2003.
http://arXiv.org/abs/condmat/0207506
 Masami Tatsuno and Masato Okada:
How does informationgeometric measure depend on underlying neural mechanism?
Neurocomputing, 5254, 649654, 2003.
 Yoichi Miyawaki and Masato Okada:
A network model of inhibitory effects induced by transcranial magnetic stimulation.
Neurocomputing, 5254, 837842, 2003.
 Masaki Nomura, Toshio Aoyagi and Masato Okada:
Twolevel hierarchy with sparsely and temporally coded patterns.
Neural Networks, 16, 947954, 2003.
 Masaki Kawamura, Ryuji Tokunaga and Masato Okada:
Lowdimensional chaos induced by frustration in a nonmonotonic system.
Europhysics Letters, 62(5), 657663, 2003.
http://arXiv.org/abs/condmat/0205471
 Masato Inoue, Hyeyoung Park and Masato Okada:
Online learning theory of soft committee machines with correlated hidden units. Steepest gradient descent and natural gradient descent .
Journal of Physical Society of Japan, 72(4), 805810, 2003.
 Seiji Miyoshi and Masato Okada:
Associative memory by neural networks with delays and pruning.
Electronics and Communication in Japan Part 3, Fundamental Electronic Science, John Wiley & Sons, 86(6), 4858, 2003.
 Tomoyuki Kimoto and Masato Okada:
Sparsely encoded associative memory model with forgetting process.
IEICE Transaction on Information and systems, E85D(12), 19381945, 2002.
 Jun Tsuzurugi and Masato Okada:
Statistical mechanics of the Bayesian image restoration under spatially correlated noise.
Physical Review E, 66, 066704, 2002.
http://arXiv.org/abs/condmat/0206286
 Hayaru Shouno, Koji Wada and Masato Okada:
Naive mean field approximation for image restoration.
Journal of Physical Society of Japan, 71(10), 24062413, 2002.
http://arXiv.org/abs/condmat/0204624
 Narihisa Matsumoto and Masato Okada:
Selfregulation mechanism of temporally asymmetric Hebbian plasticity.
Neural Computation, 14, 28832902, 2002.
 Toru Aonishi, Koji Kurata and Masato Okada:
Acceleration effect of coupled oscillator systems.
Physical Review E, 65, 046223, 2002.
 Toru Aonishi and Masato Okada:
Multibranch entrainment and slow evolution among branches in coupled oscillators.
Physical Review Letters, 88(2), 024102, 2002.
http://prl.aps.org/
http://arXiv.org/abs/condmat/0104526
 Masaki Kawamura and Masato Okada:
Transient dynamics for sequence processing neural network.
Journal of Physics A: Mathematical and General, 35(2), 253266, 2002.
http://arXiv.org/abs/condmat/0202431
 Tomoyuki Kimoto and Masato Okada:
Mixed state on a sparsely encoded associative memory model.
Biological Cybernetics, 85(4), 319325, 2001.
http://arXiv.org/abs/condmat/9911187
 Toshiyuki Tanaka, Shinsuke Kakiya and Masato Okada:
Application of twoparameter dynamical replica theory to retrieval dynamics of associative memory with nonmonotonic neurons.
Journal of Physics A: Mathematical and General, 34(13), 26952712, 2001.
http://arXiv.org/abs/condmat/0010055
 Kaname Toya, Kunihiko Fukushima, Yoshiyuki Kabashima and Masato Okada:
Bistability of mixed states in neural network storing hierarchical patterns.
Journal of Physics A: Mathematical and General, 33(14), 27252738, 2000.
http://arXiv.org/abs/condmat/9909276
 Tomoki Fukai, Tomoyuki Kimoto, Makoto Doi and Masato Okada:
Coexistence of uncorrelated and correlated attractors in a nonmonotonic neural network.
Journal of Physics A: Mathematical and General, 32(30), 55515562, 1999.
 Masaki Kawamura, Masato Okada and Yuzo Hirai:
Dynamics of selective recall in an associative memory model with onetomany associations.
IEEE Transactions on Neural Networks, 10(3), 704713, 1999.
 Toru Aonishi, Koji Kurata and Masato Okada:
A statistical mechanics of an oscillator associative memory with scattered natural frequencies.
Physical Review Letters, 82, 28002803, 1999.
http://prl.aps.org/
http://arXiv.org/abs/condmat/9808090
 Yoshio Yamaguchi, Kunihiko Fukushima and Masato Okada:
A neural network model for associative recall of maps.
Systems & Computers in Japan, 29, 386394, 1998.
 Kazushi Mimura, Masato Okada and Koji Kurata:
Associative memory model with forgetting process using nonmonotonic neurons.
IEICE Transaction on Information and systems, E81D, 12981304, 1998.
 Kazushi Mimura, Masato Okada and Koji Kurata:
Robustness to noise of associative memory using nonmonotonic analogue neurons.
IEICE Transaction on Information and systems, E81D, 928932, 1998.
 Masato Okada, Tomoki Fukai and Masatoshi Shiino:
Random and systematic dilutions of synaptic connections in a neural network with a nonmonotonic response function.
Physical Review E, 57, 20952103, 1998.
 Kunihiko Fukushima, Yoshio Yamaguchi and Masato Okada:
Neural network model of the spatial memory: associative recall maps.
Neural Networks, 10, 971979, 1997.
 Invited paper
Masato Okada:
Notions of associative memory and sparse coding.
Neural Networks, 9, 14291458, 1996.
 Kazushi Mimura, Masato Okada and Koji Kurata:
Capacity of autocorrelation associative memory with quantized synaptic weight.
Systems & Computers in Japan, 27, 5563, 1996.
 Masato Okada:
A hierarchy of macrodynamical equations for associative memory.
Neural Networks, 8, 833838, 1995.
 Michihiro Ohno, Masato Okada, Kunihiko Fukushima:
Neocognitron learned by backpropagation.
Systems & Computers in Japan, 26(5), 1928, 1995.
 Kunihiko Fukushima, Masato Okada, Kazuhito Hiroshige:
Neocognitron with dual Ccell layers.
Neural Networks, 7, 4147, 1994.
 Akio Kotani, Kozo Okada and Masato Okada:
Theory of 3dXPS and L3XAS in CeF4.
Solid State Communications, 64, 14791482, 1987.
 Akio Kotani, Takeo. Jo, Kozo Okada, Takashi Nakano, Masato Okada,
A. Bianconi, A. Marcelli and J. C. Parlebas:
High energy spectroscopy in Ce and La compounds.
Journal of Magnetism and Magnetic Materials, 70, 2832, 1987.
 Akio Kotani, Masato Okada, Takeo Jo, A. Bianconi, A. Marcelli and J. C. Parlebas:
Many body effect in inner shell photoemission and photabsorption spectra of La compounds.
Journal of the Physical Society of Japan, 56, 798809, 1987.
 Akio Kotani, Masato Okada and Takeo Jo:
Many body effects in core level spectra of Lanthanum compounds.
Physics Scripta, 35, 566569, 1987.

[International Conference Papers]

 Yoichi Miyawaki and Masato Okada:
Mechanism of neural interference by transcranial magnetic stimulation: network or single neuron?
Neural Information Processing Systems (NIPS*2003)
Vancouver, British Columbia, Canada, Dec.2003.
 Toru Aonishi, Hiroyoshi Miyawaki, Masashi Inoue and Masato Okada:
Boosting of signal transmission speed and bistability structure by Atype potassium channels.
Society for Neuroscience 33rd Annual Meeting, 2003.
 Narihisa Matsumoto, Daisuke Ide, Masataka Watanabe and Masato Okada:
Retrieval property of an attractor network with depressing synapses.
Society for Neuroscience 33rd Annual Meeting, 2003.
 Koji Wada, Koji Kurata and Masato Okada:
Selforganization of globally continuous and locally distributed information representation.
Workshop on SelfOrganizing Maps (WSOM'03), Intelligent systems and innovational computing.
Hibikino, Kitakyushu, Japan, 2003.
 Narihisa Matsumoto and Masato Okada:
Neuronal Mechanisms for hierarchical encoding in inferiortemporal cortex.
The twelfth annual computational neuroscience meeting.
Alicante, Spain, July 2003.
Proceedings will appear in Neurocomputing.
 Tatsuto Murayama and Masato Okada:
A statisticalmechanical construction of the ratedistortion function for a binary source.
Proceedings of 2003 IEEE International Symposium on Information Theory, July 2003
 Yoichi Miyawaki and Masato Okada:
Computational model of transcranial magnetic stimulation (TMS): temporal property and subthreshold prolongation of visual suppression induced by neural population.
Vision Sciences Society, 3rd Annual Meeting Vision Sciences 2003
(VSS*2003), p.207
 Tatsuto Murayama and Masato Okada:
Rate distortion function in the spin glass state: a toy model.
A Neural Information Processing Systems (NIPS*2002).
Vancouver, British Columbia, Canada, Dec 2002.
 Jun Tsuzurugi and Masato Okada:
Bayesian image restoration under spatially correlated noise statisticalmechanical approach
Proceedings of 9th International Conference on Neural Information Processing (ICONIP'02 Singapore), 5(5), 2419 2423, 2002.
 Kazuyuki Hara and Masato Okada:
@@Online learning through simple perceptron learning with margin
Proceedings of 9th International Conference on Neural Information Processing (ICONIP'02 Singapore), 1(5), 158164, 2002.
 Seiji Miyoshi, HiroFumi Yanai and Masato Okada:
Associative memory by recurrent neural networks with delay elements.
Proceedings of 9th International Conference on Neural Information Processing (ICONIP'02 Singapore), 1(5), 70 74, 2002.
 Seiji Miyoshi and Masato Okada:
A theory of associative memory model with synaptic delay and pruning.
Proceedings of Symposium on Nonlinear & Linear Information Processing Systems (NLIPS2002 Nagaoka), 1(1), 44 51, 2002.
 Toru Aonishi and Masato Okada:
Dendritic backpropagation of action potential induces bistability.
Society for Neuroscience 32nd Annual Meeting, 753.6, 2002.
 Masami Tatsuno and Masato Okada:
Possible neural mechanisms underlying information  geometric measure parameters.
Society for Neuroscience 32nd Annual Meeting, 678.15, 2002.
 Koji Wada, Koji Kurata and Masato Okada:
Selforganization of globally continuous and locally distributed information representation in the IT cortex.
Society for Neuroscience 32nd Annual Meeting, 160.17, 2002.
 Masami Tatsuno and Masato Okada:
How informationgeometric measure depends on underlying neural mechanism?
The eleventh annual computational neuroscience meeting (CNS 2002)
Proceedings in Neurocomputing, 5254, 649654, 2003.
 Yoichi Miyawaki and Masato Okada:
A network model of inhibitory effects induced by transcranial magnetic stimulation.
The eleventh annual computational neuroscience meeting (CNS 2002)
Proceedings in Neurocomputing, 5254, 837842, 2003.
 Hayaru Shouno and Masato Okada:
Analysis of Bidirectional Associative Memory using SCSNA and Statistical Neurodynamics.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 1. 239245, 2002.
 Narihisa Matsumoto and Masato Okada:
Selfregulation mechanism of temporally asymmetric Hebbian plasticity.
Neural Information Processing Systems (NIPS*2001)
Vancouver, British Columbia, Canada, Dec 2001.
Neural Information Processing Systems, 14, 245252, 2002.
 Hayaru Shouno and Masato Okada:
Statisticalmechanical approach for analog neural network model used in image restoration.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 3, 12981304, 2001.
 Masaki Kawamura, Masato Okada and Yuzo Hirai:
Analysis of correlationtype associative memory with onetomany associations.
Proceedings of the 1997 International Conference on Neural Information and Intelligent Information Systems (ICONIP'97 New Zealand), 2(2), 885 889, 1997.
 Hayaru Shouno, K. Nagahara, Kunihiko Fukushima and Masato Okada:
Handwritten digits recognition with a neocognitron using different thresholds in learning and recognition.
Proceedings of the 1996 International Conference on Neural Information and Intelligent Information Systems (ICONIP'96 Hong Kong), 1, 894 899, 1996.
 Kunihiko Fukushima, K. Nagahara, Hayaru Shouno and Masato Okada:
Training neocognitron to recognize handwritten digits in the real world.
WCNN'96(World Congress on Neural Networks), 2124, 1996.
 Kunihiko Fukushima, K. Nagahara, Hayaru Shouno and Masato Okada:
Neural network model recalling spatial maps.
Artificial Neural Networks  ICANN96, 1996.
