PsyArXiv
June 29, 2026
Yuta Naito, Tomohisa Asai, Aya Katayama et al.
preprint
This case study examined differences in the temporal dynamics of EEG indices as a function of meditation expertise using a quantitative analytic framework. EEG was recorded and analyzed across multiple sessions over three days during prolonged Samatha meditation in two meditation novices and two expert meditators. Alpha-band power, beta-band power, and peak alpha frequency were extracted in...
Frontiers in Human Neuroscience
2017
Noriaki Kanayama, Tomohisa Asai, Takashi Nakao et al.
10 citations
The self includes complicated and heterogeneous functions. Researchers have divided the self into three distinct functions called "agency," "ownership," and "narrative self". These correspond to psychiatric symptoms, behavioral characteristics and neural responses, but their relationship with brain structure is unclear. This study examined the relationship between the subjectivity of...
Experimental Brain Research
March 1, 2015
Tomohisa Asai
40 citations
The sense of body-ownership involves the integration of vision and somatosensation. In the rubber hand illusion (RHI), watching a rubber hand being stroked for a short time synchronously as one's own unseen hand is also stroked causes the observers to attribute the rubber hand to their own body. The RHI may elicit proprioceptive drift: The observers' sense of their own hand's location drifts...
Shinrigaku Kenkyu
December 2009
Tomohisa Asai, Keisuke Takano, Eriko Sugimori et al.
A "sense of agency" involves a contemporaneous experience that the "self" causes the actions performed by the "self" (i.e., "I am the one who causes my actions"). This may comprise the main component of self-consciousness. The present research focuses on the development of a questionnaire to investigate the subjective aspects of a sense of agency. We selected items from the extant relevant...
Psychiatry and Clinical Neurosciences
February 1, 2008
Tomohisa Asai, Yoshihiko Tanno
Schizotypy can be seen as an indicator of a predisposition to schizophrenia. It is possible that schizotypal people have an abnormal self-consciousness, especially with regard to the sense of self-agency. Students were rated using the Schizotypy Traits Questionnaire (STA). They were asked to press a button, which generated a tone after some delay. They were then required to judge whether they...