2018 Fiscal Year Final Research Report
Comparative investigation on inseparability of attention from intention: Functional significance of centrifugal control of the avian retina
| Project/Area Number |
16K00209
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Cognitive science
|
|---|
| Research Institution | Kagoshima University |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
Ohno Hiroshi
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Keywords | 向網膜系 / 網膜 / 視蓋 / 空間的注意 / 定位運動 / 標的識別力 / 刺激検出力 |
|---|
| Outline of Final Research Achievements |
Birds have a well-developed system projecting from the brain to the retina, the retinopetal system. In the present study, we investigated the functional significance of the signal sent by the retinopetal system to the retina. If the retinopetal signal is blocked by microinjection of muscimol into the isthmo-optic nucleus, not only discriminability of the target but also detectability of stimulus are impaired. Thus, the retinopetal signal may improve target discriminability and stimulus detectability. Furthermore, the improvement of target detectability may result in correct and prompt orienting to the target.
|
| Free Research Field |
神経情報学
|
| Academic Significance and Societal Importance of the Research Achievements |
向網膜信号は標的検出力を向上させることが明らかとなったが，それは動物の標的への正しく素早い定位運動を生成していることも分かった．例えば採餌行動での標的すなわち餌への素早い定位行動は，効率的な採餌と採餌時間の短縮（→捕食者による発見確率の低下）に繋がり，動物の生存確率の向上に資する．このように向網膜系の機能的意義を動物の合理的で効率的な行動という文脈で考察できるようになった．
|
