Scientific Data
March 6, 2025
Takahiro Hirao, Mitsuhiro Miyamae, Daisuke Matsuyoshi et al.
Recent neuroscientific research has advanced our understanding of consciousness, yet the connection between specific qualitative aspects of consciousness, known as "qualia," and particular brain regions or networks remains elusive. Traditional methods that rely on verbal descriptions from participants pose challenges in neuroimaging studies. To address this, our group has introduced a novel...
Neuroscience of Consciousness
2025
Anikó Kusztor, Nirmitee Mulay, Makiko Yamada et al.
During an acute episode of depersonalization/derealization (DP/DR), people report a complex and idiosyncratic change in their perceptual experience. Specifically, derealisation describes the experience of detachment from the external world and altered visual perception in which the surroundings look faded, foggy, or dream-like. Whilst some have argued that there may not be genuine perceptual...
bioRxiv
May 16, 2024
Takahiro Hirao, Mitsuhiro Miyamae, Daisuke Matsuyoshi et al.
preprint
Recent neuroscientific research has advanced our understanding of consciousness, yet the connection between specific qualitative aspects of consciousness, known as “qualia,” and particular brain regions or networks remains elusive. Traditional methods that rely on verbal descriptions from participants pose challenges in neuroimaging studies. To address this, our group has introduced a novel...
Frontiers in Psychology
2024
Naotsugu Tsuchiya, Peter Bruza, Makiko Yamada et al.
8 citations
To arbitrate theories of consciousness, scientists need to understand mathematical structures of quality of consciousness, or qualia. The dominant view regards qualia as points in a dimensional space. This view implicitly assumes that qualia can be measured without any effect on them. This contrasts with intuitions and empirical findings to show that by means of internal attention qualia can...
July 15, 2023
Naotsugu Tsuchiya, Hayato Saigo, Steven Phillips et al.
preprint
主観意識と客観的な物質としての脳は、全く異なる世界に属すのだろうか? 意識の中身であるクオリアと脳はいかに関係しているのか? 意識と脳の問題は、科学的な興味に留まらず、現実社会における人の気持ちの理解の困難に伴う問題にも直接関わる。意識のクオリアは、客観的な言語で定義することすら難しいため、従来の意識研究では、知覚刺激を固定し、経験を「見えた・見えない」という二値的な判断に還元し、その神経相関の探求を試みた。近年、我々は視覚クオリア間の類似度を大規模に計測することでクオリアの構造を特徴づけ、その神経相関とその情報構造を明らかにする新パラダイムを確立した。本領域は、現象学・発達・構成論を加え、知覚と感情クオリアに集中することで、クオリア構造学を創成する。本領域の成果は、他者意識の理解や、動物や人工物の意識理解など、一般社会へも広く還元されうる答えを生み出す新融合領域の創成である。
July 15, 2023
Naotsugu Tsuchiya, Hayato Saigo, Steven Phillips et al.
preprint
Summary: Establishing Qualia Structure Paradigm.?Do subjective conscious experience and objective brain matters belong to completely different worlds? How are qualia, the contents of consciousness, related to the brain? The question of consciousness and the brain is not only of scientific interest, but it is also directly related to the problems associated with difficulties in understanding...
PsyArXiv
June 2, 2023
Naotsugu Tsuchiya, Peter Bruza, Makiko Yamada et al.
preprint
To arbitrate theories of consciousness, scientists need to understand mathematical structures of quality of consciousness, or qualia. The dominant view regards qualia as points in a dimensional space. This view implicitly assumes that qualia can be measured without any effects on it. This contrasts with intuitions and empirical findings to show that by means of internal attention qualia can...
PsyArXiv
May 15, 2023
Naotsugu Tsuchiya, Masafumi Oizumi, Makiko Yamada
preprint
This is a grant proposal for Qualia Structure B (2020-2023).
Scientific Reports
May 17, 2018
Keita Yokokawa, Takehito Ito, Keisuke Takahata et al.
5 citations
Abstract Perceptual changes in shape, size, or color are observed in patients with derealization symptoms; however, the underlying neural and molecular mechanisms are not well understood. The current study explored the relationship between neural activity associated with altered colorfulness perception assessed by fMRI and striatal dopamine D2receptor availability measured by [11C]raclopride...
Naotsugu Tsuchiya, Masafumi Oizumi, Makiko Yamada et al.
preprint
我々が主観的に感じる意識と、脳の中で生じている物理・化学現象の間をつなぐ科学法則とは一体どのようなものだろうか？...