This site presents activities on computational neurosicience reserach in Neuroinformatics Japan Center, RIKEN Brain Science Institute.


An illustration of EEG during working memory tasks

Illustration of EEG synchronization during visual working memory task (Kawasaki,Kitajo, Yamaguchi 2010,2014)

A coupled nonlinear oscillator model was proposed to explain a mechanism of the observed EEG theta and alpha synchronization during working memory tasks. This study suggests a possible neuronal entity for flexible and creative thinking of the brain through a variety of phase-phase coupling among distant brain areas.


Press Release at Tsukuba University  (in Japanese)  2017.3.13


ラット場所細胞のシータ位相歳差 Animations of our computational models on place cells and grid cells are exhibited in this site in commemoration of the Nobel Prize in Physiology or Medicine 2014 .

Oct. 2014



image01Professional Shogi player processes the whole and local information concurrently and instantaneously: Hironori Nakatani & Yoko Yamaguchi, “Quick concurrent responses to global and local cognitive information underlie intuitive understanding in board-game experts”, Scientific Reports, 4:5894, doi:10.1038/srep05894

Press Release at Shogi Project 2014.8.4

InterbrainSpeech coordination between two persons is associated with inter-brain synchronization in EEG theta-alpha frequency ranges. Masahiro Kawasaki, Yohei Yamada, Yosuke Ushiku, Eri Miyauchi, Yoko Yamaguchi. “Inter-brain synchronization during coordination of speech rhythm in human-to-human social interaction”. Scientific Reports, 3:1692, doi:10.1038/srep01692

(Press released at RIKEN 2013.4.22)

mazeSlow rhythmic modulation of theta amplitude in rat hippocampus concern with functional organization between place cell firing and behavioral contexts. Molter, C., O’Neill, J., Yamaguchi, Y., Hirase, H. & Leinekugel, X. Rhythmic modulation of theta oscillations supports encoding of spatial and behavioral information in the rat hippocam- pus. Neuron 75, 889–903 (2012).

RIKEN Research March 2013  8(3) 7.

Recent update log: May 2, 2013 Renewal “RIKEN BSI – UT Collaboration Unit (Komaki) ” page. May 2, 2013 Update “Links” page.