1. Refereed Papers
    1. published (including ``in press.'')
      1. [J] Tohru Ikeguchi, Kazuyuki Aihara, Susumu Itoh and Toshio Utsunomiya:
        ``A Dimensional Analysis on Chaotic Neural Networks,''
        Transactions of IEICE, Vol.J73-A, No.3, pp.486-494 (March 1990).[J]

      2. Tohru Ikeguchi, Kazuyuki Aihara, Susumu Itoh and Toshio Utsunomiya:
        ``An Analysis on the Lyapunov Spectrum of Electroencephalographic (EEG) Potentials,''
        Transactions IEICE, Vol.E73, No.6, pp.842-847 (June 1990).

      3. Tohru Ikeguchi, Kazuyuki Aihara and Takeshi Matozaki:
        ``The f(\alpha) spectrum of a chaotic neuron model,''
        Transactions IEICE, Vol. E74, No.6, pp.1476-1478 (June 1991). ( pdf)

      4. A. Mees, K. Aihara, M. Adachi, K. Judd, T. Ikeguchi and G. Matsumoto:
        ``Deterministic Prediction and Chaos in Squid Axon Response,''
        Physics Letters A, Vol.169, No.1 & 2, pp.41-45 (September 1992).

      5. [J] Takeshi M.atozaki and Tohru Ikeguchi:
        ``Appilcation of a Visualization Technique to Contouring Brain Substance in Medical CT Image,''
        Japanese Journal of Medical Engineering，Vol.33, No.1, pp.24-31 (1995).[J]

      6. Tohru Ikeguchi and Kazuyuki Aihara:
        ``Prediction of Chaotic Time Series with Noise,''
        Transactions IEICE, Vol. E78, No.10, pp.1291-1298 (1995). ( pdf)

      7. [J] Takeshi Terasaki, Tohru Ikeguchi, Kazuyuki Aihara and Kazuyuki Aihara:
        ``Improving image segmentation by chaotic dynamics,''
        Transactions IEICE, Vol.J78-A, No.12, pp1601-1617 (1995). ( pdf)

      8. Satoshi Ogawa, Tohru Ikeguchi, Takeshi Matozaki and Kazuyuki Aihara:
        ``Nonlinear Modeling by Radial Basis Function Networks,''
        Transactions IEICE, Vol.E79, No.10 (1996). ( pdf)

      9. Mikio Hasegawa, Tohru Ikeguchi, Takeshni Matozaki and Kazuyuki Aihara:
        ``Improving image segmentation by chaotic dynamics,''
        IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences,
        Vol.E79-A, No.10, pp.1630-1637, 1996. ( pdf)

      10. Masamune Satoh, Tohru Ikeguchi and Takeshi Matozaki:
        ``An Automatic Extraction Algorithm for Removing Uninterested Regions in Image Signals,''
        IEICE Trans. Inf. & Sys., Vol.E80-D, No.1, pp.63-71 (1997). ( pdf)

      11. Mikio Hasegawa, Tohru Ikeguchi, Takeshi Matozaki and Kazuyuki Aihara:
        ``An Analysis of Additive Effects of Nonlinear Dynamics for Combinatorial Optimization,''
        IEICE Trans. Fundamentals, Vol.E80-A, No.1, pp.206-213(1997). ( pdf)

      12. Tohru Ikeguchi and Kazuyuki Aihara:
        ``Estimating correlation dimensions of biological time series using a reliable method,''
        Journal of Intelligent and Fuzzy Systems, pp.33-52 (1997).

      13. Tohru Ikeguchi and Kazuyuki Aihara:
        ``Difference correlation can distinguish deterministic chaos from 1/f^\alpha type colored noise,''
        Physical Review E, Vol.55, No.3, pp.2530-2538(1997). ( pdf)

      14. Tohru Ikeguchi and Kazuyuki Aihara:
        ``On Dimension Estimates with Surrogate Data Sets,''
        IEICE Trans., Vol.E80-A, No.5, pp.859-868(1997). ( pdf )

      15. [J] Mikio Hasegawa, Tohru Ikeguchi, Takeshi Matozaki and Hitoshi Watatsu:
        ``Image Analysis by Polygonal-shape-block-segmentation,''
        Transactions of IEICE, Vol.J80-DII, No.5, pp.1096-1104 (1997). ( pdf)

      16. Tohru Ikeguchi and Kazuyuki Aihara:
        ``Lyapunov Spectral Analysis on Random Data,''
        International Journal of Bifurcation and Chaos, Vol.7, No.6, pp.1267-1282, 1997.

      17. Mikio Hasegawa, Tohru Ikeguchi and Kazuyuki Aihara:
        ``Combination of Chaotic Neurodynamics with the 2-opt algorithm to solve Traveling Salesman Problems,''
        Physical Review Letters, Vol.79, No.12, pp.2344-2347, 1997. ( pdf)

      18. Kazuyuki Aihara, Tohru Ikeguchi and Gen Matsumoto:
        ``Deterministic Nonlinear Dynamics of a Forced Oscillation Experimentally Observed with a Squid Giant Axon,''
        International Journal of Chaos Thoery and Applications, Vol. 3, No.3, pp.5-20, 1998.

      19. Mikio Hasegawa, Tohru Ikeguchi and Kazuyuki Aihara:
        ``Exponential and Chaotic Neurodynamical Tabu Searches for Quadratic Assignment Problems,''
        Control and Cybernetics, Vol.29, No.3, pp.773-788, 2000. ( pdf)

      20. Mikio Hasegawa, Tohru Ikeguchi and Kazuyuki Aihara:
        ``A Novel Chaotic Search for Quadratic Assignment Problems,''
        European Journal of Operational Research, Vol.139, No.3, pp.543-556, 2002. ( pdf)

      21. Mikio Hasegawa, Tohru Ikeguchi and Kazuyuki Aihara:
        ``Solving Large Scale Traveling Salesman Problems by Chaotic NeuroDynamics,''
        Neural Networks, Vol.15, No.2, pp.271-283, 2002. ( pdf)

      22. Tomoya Suzuki, Tohru Ikeguchi and Masuo Suzuki:
        ``Nonlinear Analysis on Interspike Interval Time Series from Foreign Exchange Rates,''
        Physica A, Vol.323, pp.591-600, 2003. ( PDF)

      23. Tomoya Suzuki, Tohru Ikeguchi and Masuo Suzuki:
        ``On the evaluation of noise levels for quantized data,''
        to appear in International Journal of Modern Physics C, 2003.

      24. Yoko Uwate, Yoshifumi Nishio, Tetsushi Ueta, Tohru Kawabe and Tohru Ikeguchi:
        ``Performance of Chaos and Burst Noises Injected to the Hopfield NN for Quadratic Assignment Problems,''
        to appear in IEICE Trans. Fundamentals, 2004. ( pdf)

      25. Tomoya Suzuki, Tohru Ikeguchi and Masuo Suzuki:
        ``A Model of Complex Behavior of Interbank Exchange Markets,''
        to appear in Physica A, Vol.337, No.1-2, pp.196--218, 2004. ( PDF)

    2. Preprints/In preparation

      1. Ryosuke Hosaka, Yutaka Sakai, Tohru Ikeguchi and Shuji Yoshizawa:
        ``Difference between LIF model and BVP model in higher order statistics of Inter-Spike Intervals,'' preprint, 2003.

      2. Ryosuke Hosaka, Hikoichiro Nakamura, Osamu Araki and Tohru Ikeguchi:
        ``External input evoke Synchrony on recurrent neural network through Spike-Timing dependent synaptic Plasticity,'' preprint, 2003.

      3. Kento Hosoda, Ryosuke Hosaka and Tohru Ikeguchi:
        ``A new model for an individual plant for masting behavior,'' preprint, 2003.

      4. Tohru Ikeguchi, Mikio Hasegawa and Kazuyuk Aihara:
        ``Chaotic neural networks for quadratic assignment problems,'' preprint, 2003.

      5. Tohru Ikeguchi and Yoshitaka Kanno:
        ``Nonlinear event prediction - A paradigm for modeling complex phenomena- ,'' preprint, 2003.

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