APPROACH

Uncovering Neural Correlates

Through psychophysical and neuroimaging experiments, we clarify the neural basis of perception and cognition. Recently, we have been studying the neural mechanisms of temporal and numerical processing, with particular focus on their neural representations and its relationship with our percepts. In the future, I would like to deepen these researches, and also to study how the way information is represented constrains human thoughts and language.

  • Hayashi MJ, Ivry RB (2020) J Neurosci.
  • Hayashi MJ, van der Zwaag W, Bueti D, Kanai R (2018) Commun Biol.
  • Hayashi MJ, Ditye T, Harada T, Hashiguchi M, et al. (2015) PLoS Biol.
  • Revealing Causal Relationships

    A weakness of neuroimaging techniques is that while it can reveal the correlation between perception / cognition and brain activity, it cannot reveal the causal relationship between them. Therefore, we use techniques such as transcranial magnetic stimulation (TMS, tSMS) and transcranial electrical stimulation (tDCS, tACS) techniques, which can stimulate the brain non-invasively, to temporarily modulate neural activity and clarify the causal relationship between brain activity and perception / cognition. Currently, we are mainly investigating how the perception of time and number is modulated by brain stimulation.

  • Hayashi MJ, Kanai R, Tanabe HC, Yoshida Y, et al. (2013) J Neurosci.

    Expanding Human Abilities

    Based on the knowledge obtained from psychophysical experiments, neuroimaging, and brain stimulation experiments, we will develop technologies that can improve human perception and cognitive abilities and control them at will. To achieve this goal, we combine wearable devices which allows us to collect external and internal biological information, machine learning techniques, and sensory and brain stimulation methods. In the future, we further expand this idea to develop a new technology that helps us to acquire new abilities that humans have never had before, and to implement it in society.

  • JST PRESTO, The Future of Humans and Interactions