Stochastic resonance (SR) Keiichi Kitajo's website

Keiichi Kitajo's website

Contact Information Home Japanese

Keiichi Kitajo, Ph.D. (Kei)

Research Scientist
Lab. for Dynamics of Emergent Intelligence
RIKEN Brain Science Institute(BSI)
2-1, Hirosawa,Wako-shi, Saitama
351-0198 Japan

Honorary Research Associate
Psychophysics and Cognitive Neuroscience Laboratory (Prof. Lawrence M. Ward)Department of Psychology, University of British Columbia (UBC)
2136 West Mall, BC, V6T1Z4, Canada

E-mail kkitajo@brain.riken.jp, kitajyo@p.u-tokyo.ac.jp, kkitajo@psych.ubc.ca

Nationality Japanese

Current Projects
1.Stochastic resonance (SR) within the human brain
Visual SR
Auditory SR
Crossmodal SR

2.Stochastic resonance and synchronization in the brain
SR and Large-scale Synchronization of the human brain (EEG potential and Scalp current density)

3.Higher cognitive function and Stochastic resonance
SR in multi-stable perception (attention, ambiguous figures etc..)

4.Ongoing activity and SR

Keywords
Noise, perception, synchronization, stochastic resonance, brain, EEG, Auditory steady-state response, attention

Selected Publications and Presentations (International Conferences, Journals, etc.) Please don't hesitate to contact me if you need reprints or pdf files!

K. Kitajo, RIKEN BSI seminar. Stochastic resonance within the human brain. 2005.

K. Kitajo, K. Yamanaka, L. M. Ward and Y. Yamamoto, Stochastic resonance in attention control. submitted

K. Kitajo, K. Yamanaka, L. M. Ward and Y. Yamamoto, Stochastic resonance in attention switching. Proceedings of SPIE 5841: 49-56, 2005.

S. Doesburg, K. Kitajo, L. M. Ward, Gamma-band synchrony precedes switching of conscious perceptual objects in binocular rivalry. NeuroReport 16: 1139-1142, 2005.

K. Kitajo, K. Yamanaka, D. Nozaki, L. M. Ward and Y. Yamamoto, Frequency-specific, noise-influenced neural synchrony and detection of visual signals. submitted

K. Kitajo, K. Yamanaka, D. Nozaki, L. M. Ward and Y. Yamamoto, Behavioral stochastic resonance is associated with large-scale synchronization of human brain activity. Proceedings of SPIE 5467:359-369, 2004.

K. Kitajo, D. Nozaki, L. M. Ward and Y. Yamamoto, Behavioral stochastic resonance within the human brain. Physical Review Letters 90: 218103, 2003.

K. Kitajo, D. Nozaki, L. M. Ward and Y. Yamamoto, Behavioral stochastic resonance in the human brain. Fluctuations and Noise in Biological, Biophysical, and Biomedical System, Santa Fe USA , Proceedings of SPIE 5110: 252-261, 2003.

K. Kitajo, D. Nozaki and Y. Yamamoto, Human perception-action coupling enhanced by stochastic resonance. First SIAM (Society for Industrial and Applied Mathematics) Conference on Life Sciences, Boston USA ,2002.

K. Kitajo, Inter-blink interval and human cognition.　Measurements, analyses, and modeling of spontaneous rhythmicity in biosignals. ; International Scientific Research, Ministry of Education, Science and Culture: Joint Research Program on "Functional Role of Noise in Physiological Control Systems". Tokyo , Japan , 2000.

K. Kitajo, C. Fukusaki, Y. Yamamoto, H. Yano and M. Miyashita, Development of the inhibitory system in human spinal cord.　 Third World Congress of Biomechanics, Sapporo , Japan , 1998.

K. Kitajo, M. Shirayama and M. Miyashita, Elbow movement patterns predicted by means of an artificial neural network. XI th Congress of the International Society of Biomechanics, Jyuvaskyla , Finland , 1995.

K. Kitajo M. Shirayama, and M. Miyashita Neural Networks Learning EMG-Torque Relationship during Voluntary Isometric Knee Extension. Japanese Journal of Sports Sciences. 1995.

Media coverage of our researches

Static on the Brain. Physical Review Focus, --30 May 2003
Eye can see better when it’s noisy. NewScientist, --7 June 2003
Virtual Journal of Biological Physics Research, Volume 5, Issue 11, -- 1 June 2003
Kyodo news -- 3 July 2003
Noise aids perception. Cern Courier, Volume 43, Number 6, 2003
Wissenschaft-online 2 June 2003
Wissenschaft.de 5 June 2003　
Scinews.ru 　
ECPLANET

Awards
Japanese Society of Biomechanics: 1994 New Investigator Award. Learning and prediction of EMG-Torque relationship using artificial neural networks.

Grant Awards
Principal Investigator, Grant-in-Aid for Scientific Research, Ministry of Education, Science and Culture, Japan (2001-2002). Relationship between spontaneous eye blinking and human cognition during voluntary movement.

Principal Investigator, Grant-in-Aid for Scientific Research, Ministry of Education, Science and Culture, Japan (1999-2000). Changes in visual and somato-sensory information processing during human motor learning.

Principal Investigator. Research Award of Casio Science Foundation, Japan (1999). Effect of human cognitive process on eye blinking - Development of portable measurement device for eye blinking -.

My interests
Brain, Synchronization, Noise, Perception, Soccer football, Pumping iron, Alpine skiing

Tools
OS Linux (Turbolinux), MS Windows, Mac OS X, Unix (Solaris)
Psychophysics　
Presentation (Neurobehavioral systems)
Psychophysics toolbox (matlab free toolbox)　

Data anayses
Matlab, Siganl processing Toolbox, Matlab Compiler, EEGLAB
Mathematica, Gnuplot, Igor, GIMP
Miktex　Tex, TexnicCenter, SAS　　