2022 Fiscal Year Final Research Report
Extraction of information structure from brain activity corresponding to qualia structure
| Project Area | Understanding the relationship between the structure of qualia and the structure of information processing extracted from brain activity |
|---|
| Project/Area Number |
20H05712
|
|---|
| Research Category |
Grant-in-Aid for Transformative Research Areas (B)
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Transformative Research Areas, Section (I)
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
Masafumi Oizumi 東京大学, 大学院総合文化研究科, 准教授 (30715371)
|
|---|
| Project Period (FY) |
2020-10-02 – 2023-03-31
|
| Keywords | 意識 / クオリア / クオリア構造 / 教師なしアラインメント / 最適輸送 / Gromov-Wasserstein距離 |
|---|
| Outline of Final Research Achievements |
We have developed a method to compare the subjective experiences (qualia) of different individuals without pre-defining the correspondence between qualia across individuals. This method does not assume that individual subjective experiences (e.g., the 'red' qualia when seeing red) are identical, but compares based solely on the relationships between qualia (qualia structure). By applying this method to color similarity data and object similarity judgment data, we demonstrated that the qualia structures correspond between different subjects. On the other hand, we also showed that the qualia structures do not align between subjects with typical and atypical color vision. Furthermore, by using this method to investigate the correspondence between the structure of brain activity and the qualia structure, it becomes possible to tackle the question of what kind of brain activity corresponds to qualia.
|
| Free Research Field |
理論神経科学
|
| Academic Significance and Societal Importance of the Research Achievements |
個人の主観の質（クオリア）は定量化することが不可能なのものと考えられてきた。我々はクオリア同士の関係性（クオリア構造）に着目し、個人間でクオリア構造同士が対応するかどうかを、定量的に比較する新しい数学的な方法論を提案した。この方法論は従来法とは異なり、予め自分の「赤」の主観が他人の「赤」の主観と対応することを仮定しないで、関係性の観点から自分の「赤」が他人の「赤」と対応するかどうかを調べる。このような主観的な構造の比較を通して、従来不可能と考えられてきた自分と他者のクオリアの類似性を定量的に評価することが可能となった。この枠組みで主観と脳活動との対応関係を調べることも可能となる。
|
