Centers & Labs

RIKEN Brain Science Institute

Behavioral and Cognitive Neuroscience Unit

Unit Leader: Takatsune Kumada (Ph.D.)
Takatsune  Kumada(Ph.D.)

We investigate cognitive and brain basis for driving. We are approaching mechanisms of driving behavior, especially focusing on visuo-motor coordination, visual attention, action coordination and switching, mental state (such as mind-wondering) and executive functions. These topics are also examined in terms of individual difference perspective of drivers (e.g., novice vs skilled, young vs older, etc.). In addition, we seek for serving to bridge the gap between brain science and engineering by proposing new concept of driving assistance on the basis of understanding of cognitive and brain mechanism of these functions.

Main Research Field

Psychology & Psychiatry

Research Subjects

  • Mechanism of cognitive control in sequential actions
  • Age-related or individual difference of attention and executive functions
  • Neural basis of driving behavior

Selected Publications

  1. Shimomura, T., & Kumada, T.:
    "Spatial working memory load affects counting but not subitizing in enumeration."
    Attention, Perception, & Psychophysics, 73, 1694-1709. (2011)
  2. Kumada, T.:
    "A search order lost effect: Ignoring a singleton distractor affects visual search efficiency."
    Vision Research. 50, 1402-1413. (2010)
  3. Inukai, T., Kawahara, J., & Kumada, T.:
    "Nonspatial interdimensional attentional capture."
    Attention, Perception, & Psychophysics, 72, 658-666. (2010)
  4. Niki, C. , Maruyama, T. , Muragaki, Y., & Kumada, T.:
    "Disinhibition of sequential actions following right frontal lobe damage."
    Congnitive Neuropsychology, 26, 266-285. (2009)
  5. Ogawa, H., & Kumada, T.:
    "The encoding process of nonconfigural information in contextual cuing."
    Perception and Psychophysics. 70, 329-336. (2008)
  6. Takeda, Y., Phillips, S., & Kumada, T.:
    "A conjunctive feature similarity effect for visual search."
    Quarterly Journal of Experimental Psycholology. 60, 186-190. (2007).
  7. Kasai, T., Morita, H., & Kumada, T.:
    "Attribute-invariant orientation discrimination at an early stage of processing in the human visual system."
    Vision Research, 47, 203-209. (2007)
  8. Kawahara, J., Kumada, T., & Di Lollo, V.:
    "The attentional blink is governed by a temporary loss of control."
    Psychonomic Bulletin and Review. 13, 886-890. (2006)
  9. Kumada, T., & Hayashi, M.:
    "Deficits in feature-based control of attention in a patient with a right fronto-temporal lesion."
    Cognitive Neuropsychology, 23, 401-423. (2006)
  10. Kumada, T., & Humphreys, G. W.:
    "Dimensional weighting and task switching following frontal lobe damage: Fractionating the task switching deficit."
    Cognitive Neuropsychology, 23, 424-447. (2006)

Lab Members

Principal Investigator

Takatsune Kumada
Unit Leader

Core Members

Sayako Ueda
Research Scientist
Kenji Hirose
Research Scientist
Ritsuko Iwai
Technical Staff I
Kenta Nozoe
Technical Staff II
Kaori Maeda

Contact information

2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Email: t.kumada [at]